What is the difference between a curved barbell and a straight barbell?

A curved barbell has a gently arced shaft — typically 35–45 degrees — designed to follow the contour of body placements such as the navel, eyebrow, rook, and daith. A straight barbell has a flat, linear shaft and is used for tongue piercings, industrial piercings, and certain cartilage placements. Using the wrong shape for a placement puts uneven pressure on the tissue and can increase the risk of irritation or migration over time.

What gauge barbell do I need for a tongue piercing?

Most tongue piercings are fitted at 14G (1.6mm). Bar length is typically 16mm or longer for an initial piercing to allow for swelling, then downsized to around 12mm once the piercing has healed — usually at 4–8 weeks, confirmed by a professional piercer. Do not downsize without a piercer assessment if the tongue is still swollen or tender.

What gauge is a standard industrial barbell?

Industrial barbells are most commonly 14G (1.6mm). Bar length varies significantly based on individual ear anatomy — most adults need between 32mm and 40mm, but this should be measured by your piercer. A bar that is too short will pull tight against both piercing points and cause migration.

Are surgical steel curved barbells safe for healing piercings?

Surgical steel curved barbells — including 316L and 316LVM grades — are compliant with the EU Nickel Directive and suitable for most healed piercings. However, they do contain trace nickel. For a healing piercing, or for anyone with a confirmed nickel sensitivity, implant-grade titanium (ASTM F136) is the more appropriate material. The Association of Professional Piercers recommends titanium or implant-grade steel (ASTM F138) for initial and healing jewellery.

What does 4mm, 6mm, or 8mm refer to on a barbell?

These measurements refer to the internal bar length — the wearable length of the shaft between the two end pieces. A 4mm bar is very short, suited to shallow tissue depths in healed flat or cartilage piercings. A 6mm bar is common for healed cartilage placements. An 8mm bar provides slightly more clearance and is often used where there is a little more tissue depth or localised swelling. Bar length should match the anatomy of the specific piercing — not guessed.

What is a PTFE barbell used for?

PTFE (polytetrafluoroethylene) barbells are flexible, nickel-free, and non-metallic — making them appropriate for specific situations where a rigid metal barbell is not suitable. Common use cases include MRI procedures (metal jewellery must be removed or replaced for imaging), contact sports, and pregnancy navel bars where flexibility reduces pressure on changing tissue. PTFE is not recommended for long-term daily wear — the material can degrade and is more difficult to keep fully sterile than polished metal.

Can I wear a twisted barbell in a fresh piercing?

Twisted barbells are generally better suited to healed piercings. The spiral shaft, while aesthetic, makes clean insertion through a fresh piercing channel more difficult and can cause unnecessary trauma to healing tissue. Once a piercing is fully healed, a twisted barbell is a straightforward style change.

What is the difference between barbell earrings and standard barbells?

Barbell earrings is a broadly used term for barbells worn in ear placements — including industrial bars across the upper cartilage, curved barbells in the rook, daith, or helix, and straight barbells in flat or tragus piercings. The jewellery itself is the same type — the term earring simply indicates the intended placement. Most ear cartilage piercings use 16G (1.2mm) gauge; industrial piercings use 14G (1.6mm).

What is a micro barbell?

A micro barbell is a finer-gauge barbell — typically 20G (0.8mm) or 18G (1.0mm) — designed for smaller placements such as nostril piercings, surface piercings, or fine ear piercings. The bar and ends are proportionally smaller than standard barbells, keeping the jewellery subtle and appropriate for the anatomy of finer placements.

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Shop barbells in curved, industrial, twisted and tongue designs. Available in titanium, steel, gold & silver for safe, durable and stylish body piercings.

Product Overview

Specifications

Professional Use

Safety & Material Guidance

Ordering & Shipping

Disclaimer

FAQ

Styles available: Curved barbells, straight barbells, industrial barbells, twisted barbells, and tongue barbells — each suited to specific piercing placements and anatomy.
Materials: Titanium, surgical steel, gold, and flexible options including PTFE and silicone barbells — suitable for healed piercings across a range of material preferences and sensitivities.
Gauge range: Available from 20G (0.8mm) through to larger gauges — covering standard placements including tongue (14G), eyebrow and navel (16G), and nostril and ear (18G–20G).
End styles: Ball ends, crystal ends, pearl ends, spike ends, and flat disc ends — threaded to fit standard barbell shafts.
Placement coverage: Curved barbells for navel, eyebrow, rook, and daith; industrial barbells for scaffold/industrial ear piercings; tongue barbells for oral piercings; twisted barbells for healed navel, tongue, and eyebrow placements.
UK dispatch: All orders dispatched from the UK with fast delivery. First order discount available at checkout.

Barbell Style	Common Gauge	Typical Bar Length	Primary Placements
Curved Barbell	16G (1.2mm), 14G (1.6mm)	6mm – 12mm	Navel, eyebrow, rook, daith
Industrial Barbell	14G (1.6mm)	32mm – 40mm+	Industrial / scaffold (upper cartilage)
Twisted Barbell	14G (1.6mm), 16G (1.2mm)	6mm – 16mm	Tongue, navel, eyebrow (healed)
Tongue Barbell (Straight)	14G (1.6mm)	12mm – 19mm	Tongue
Curved Tongue Bar	14G (1.6mm)	14mm – 18mm	Tongue (anatomy-dependent)
Micro Barbell	20G (0.8mm), 18G (1.0mm)	4mm – 8mm	Nostril, surface, flat/cartilage

Material	Nickel Content	Suitable for Healing	Notes
Titanium	Nickel-free	Yes (implant-grade ASTM F136)	Lightweight; can be anodised for colour
Surgical Steel (316L/316LVM)	Low — EU Nickel Directive compliant	Healed piercings; not recommended for sensitivity	Widely used; cost-effective
Gold (9ct / 14ct solid)	Varies by alloy	Healed piercings only	Solid gold only — not plated
PTFE / Silicone	None	Specific use cases (MRI, sport, pregnancy)	Flexible; not for long-term wear

Initial piercing jewellery: For studios fitting initial jewellery, implant-grade titanium (ASTM F136) and implant-grade steel (ASTM F138) barbells are the Association of Professional Piercers (APP)-recommended materials for new piercings.
Downsizing appointments: Tongue and navel barbells are typically placed long (to accommodate swelling) and downsized once initial healing is complete — studios should carry a range of bar lengths for this purpose.
Industrial bar fitting: Industrial barbell length must be assessed per client — a bar that is too short will migrate; too long and it catches on hair and clothing. Most studios measure between 32mm and 40mm depending on ear anatomy.
Sensitivity protocols: PTFE barbells are appropriate for clients undergoing MRI imaging or those in occupations where metal jewellery must be temporarily replaced — not a substitute for implant-grade metals as a primary material.
Threading systems: Internally threaded and threadless barbells are preferred for healing tissue — externally threaded shafts can disrupt the piercing channel during insertion and removal.

Healing piercings: Use implant-grade titanium (ASTM F136) or implant-grade steel (ASTM F138) for new and healing piercings. Surgical steel (316L) is suitable for most healed piercings but contains nickel and is not recommended for confirmed nickel sensitivity or unhealed tissue.
Nickel sensitivity: Titanium and PTFE barbells are appropriate alternatives for individuals with known nickel sensitivity or contact dermatitis. Gold (solid 9ct or 14ct) is also appropriate for healed piercings.
Bar length: Incorrect bar length — particularly too short — can cause embedding of end pieces into healing tissue. Do not downsize jewellery without professional assessment if the piercing is still healing.
Plated jewellery: Gold-plated or PVD-coated barbells have a base metal core. The surface layer can wear through inside a piercing channel. Solid material barbells are preferable wherever direct tissue contact is involved.
PTFE and silicone: Flexible barbells are not suitable for long-term wear. Scratched or degraded PTFE can harbour bacteria. Replace regularly and do not use as a primary healing jewellery material.
Professional advice: Consult a qualified piercer before changing jewellery in a new or unhealed piercing. If you experience persistent irritation, swelling, or discharge, seek advice from a qualified piercer or medical professional before switching jewellery.

This product is intended for use on healed or professionally assessed piercings. Aftercare and healing times vary by individual — consult a qualified professional piercer or licensed medical provider for guidance. This is not a substitute for professional advice.

UK dispatch: All orders are dispatched from the UK — fast delivery available across the United Kingdom.
First order discount: New customers receive a discount on their first purchase — applied automatically at checkout.
Sizing before you order: Check the gauge and bar length of your current jewellery before ordering a replacement. If unsure, your piercer can confirm the correct measurements at a quick appointment.
Bulk and multipack pricing: Select barbells and fittings are available in multipacks — check individual product listings for availability.
Returns and exchanges: Not specified in provided data — refer to the Monster Piercing returns policy page for current terms.

All barbell jewellery listed on this page is intended for use on healed or professionally assessed piercings unless otherwise stated. Body jewellery gauge, bar length, and material selection should be confirmed with a qualified professional piercer prior to purchase where there is any uncertainty — particularly for new, healing, or problematic piercings.

Material descriptions on this page reflect information available at the time of publication. Implant-grade designations (e.g. ASTM F136 titanium, ASTM F138 steel) apply only to products where this is explicitly confirmed in individual product listings. Monster Piercing does not make blanket implant-grade claims across its full range. Check individual product details for material specifications.

This page does not constitute medical advice. If you are experiencing an adverse reaction, infection, or complications related to a piercing, consult a licensed medical professional. Do not rely on jewellery changes alone to resolve piercing complications.

What is the difference between a curved barbell and a straight barbell?

A curved barbell has a gently arced shaft — typically 35–45 degrees — designed to follow the contour of body placements such as the navel, eyebrow, rook, and daith. A straight barbell has a flat, linear shaft and is used for tongue piercings, industrial piercings, and certain cartilage placements. Using the wrong shape for a placement puts uneven pressure on the tissue and can increase the risk of irritation or migration over time.
What gauge barbell do I need for a tongue piercing?

Most tongue piercings are fitted at 14G (1.6mm). Bar length is typically 16mm or longer for an initial piercing to allow for swelling, then downsized to around 12mm once the piercing has healed — usually at 4–8 weeks, confirmed by a professional piercer. Do not downsize without a piercer assessment if the tongue is still swollen or tender.
What gauge is a standard industrial barbell?

Industrial barbells are most commonly 14G (1.6mm). Bar length varies significantly based on individual ear anatomy — most adults need between 32mm and 40mm, but this should be measured by your piercer. A bar that is too short will pull tight against both piercing points and cause migration.
Are surgical steel curved barbells safe for healing piercings?

Surgical steel curved barbells — including 316L and 316LVM grades — are compliant with the EU Nickel Directive and suitable for most healed piercings. However, they do contain trace nickel. For a healing piercing, or for anyone with a confirmed nickel sensitivity, implant-grade titanium (ASTM F136) is the more appropriate material. The Association of Professional Piercers recommends titanium or implant-grade steel (ASTM F138) for initial and healing jewellery.
What does 4mm, 6mm, or 8mm refer to on a barbell?

These measurements refer to the internal bar length — the wearable length of the shaft between the two end pieces. A 4mm bar is very short, suited to shallow tissue depths in healed flat or cartilage piercings. A 6mm bar is common for healed cartilage placements. An 8mm bar provides slightly more clearance and is often used where there is a little more tissue depth or localised swelling. Bar length should match the anatomy of the specific piercing — not guessed.
What is a PTFE barbell used for?

PTFE (polytetrafluoroethylene) barbells are flexible, nickel-free, and non-metallic — making them appropriate for specific situations where a rigid metal barbell is not suitable. Common use cases include MRI procedures (metal jewellery must be removed or replaced for imaging), contact sports, and pregnancy navel bars where flexibility reduces pressure on changing tissue. PTFE is not recommended for long-term daily wear — the material can degrade and is more difficult to keep fully sterile than polished metal.
Can I wear a twisted barbell in a fresh piercing?

Twisted barbells are generally better suited to healed piercings. The spiral shaft, while aesthetic, makes clean insertion through a fresh piercing channel more difficult and can cause unnecessary trauma to healing tissue. Once a piercing is fully healed, a twisted barbell is a straightforward style change.
What is the difference between barbell earrings and standard barbells?

Barbell earrings is a broadly used term for barbells worn in ear placements — including industrial bars across the upper cartilage, curved barbells in the rook, daith, or helix, and straight barbells in flat or tragus piercings. The jewellery itself is the same type — the term earring simply indicates the intended placement. Most ear cartilage piercings use 16G (1.2mm) gauge; industrial piercings use 14G (1.6mm).
What is a micro barbell?

A micro barbell is a finer-gauge barbell — typically 20G (0.8mm) or 18G (1.0mm) — designed for smaller placements such as nostril piercings, surface piercings, or fine ear piercings. The bar and ends are proportionally smaller than standard barbells, keeping the jewellery subtle and appropriate for the anatomy of finer placements.

Product Overview

Styles available: Curved barbells, straight barbells, industrial barbells, twisted barbells, and tongue barbells — each suited to specific piercing placements and anatomy.
Materials: Titanium, surgical steel, gold, and flexible options including PTFE and silicone barbells — suitable for healed piercings across a range of material preferences and sensitivities.
Gauge range: Available from 20G (0.8mm) through to larger gauges — covering standard placements including tongue (14G), eyebrow and navel (16G), and nostril and ear (18G–20G).
End styles: Ball ends, crystal ends, pearl ends, spike ends, and flat disc ends — threaded to fit standard barbell shafts.
Placement coverage: Curved barbells for navel, eyebrow, rook, and daith; industrial barbells for scaffold/industrial ear piercings; tongue barbells for oral piercings; twisted barbells for healed navel, tongue, and eyebrow placements.
UK dispatch: All orders dispatched from the UK with fast delivery. First order discount available at checkout.

Specifications

Barbell Style	Common Gauge	Typical Bar Length	Primary Placements
Curved Barbell	16G (1.2mm), 14G (1.6mm)	6mm – 12mm	Navel, eyebrow, rook, daith
Industrial Barbell	14G (1.6mm)	32mm – 40mm+	Industrial / scaffold (upper cartilage)
Twisted Barbell	14G (1.6mm), 16G (1.2mm)	6mm – 16mm	Tongue, navel, eyebrow (healed)
Tongue Barbell (Straight)	14G (1.6mm)	12mm – 19mm	Tongue
Curved Tongue Bar	14G (1.6mm)	14mm – 18mm	Tongue (anatomy-dependent)
Micro Barbell	20G (0.8mm), 18G (1.0mm)	4mm – 8mm	Nostril, surface, flat/cartilage

Material	Nickel Content	Suitable for Healing	Notes
Titanium	Nickel-free	Yes (implant-grade ASTM F136)	Lightweight; can be anodised for colour
Surgical Steel (316L/316LVM)	Low — EU Nickel Directive compliant	Healed piercings; not recommended for sensitivity	Widely used; cost-effective
Gold (9ct / 14ct solid)	Varies by alloy	Healed piercings only	Solid gold only — not plated
PTFE / Silicone	None	Specific use cases (MRI, sport, pregnancy)	Flexible; not for long-term wear

Professional Use

Initial piercing jewellery: For studios fitting initial jewellery, implant-grade titanium (ASTM F136) and implant-grade steel (ASTM F138) barbells are the Association of Professional Piercers (APP)-recommended materials for new piercings.
Downsizing appointments: Tongue and navel barbells are typically placed long (to accommodate swelling) and downsized once initial healing is complete — studios should carry a range of bar lengths for this purpose.
Industrial bar fitting: Industrial barbell length must be assessed per client — a bar that is too short will migrate; too long and it catches on hair and clothing. Most studios measure between 32mm and 40mm depending on ear anatomy.
Sensitivity protocols: PTFE barbells are appropriate for clients undergoing MRI imaging or those in occupations where metal jewellery must be temporarily replaced — not a substitute for implant-grade metals as a primary material.
Threading systems: Internally threaded and threadless barbells are preferred for healing tissue — externally threaded shafts can disrupt the piercing channel during insertion and removal.

Safety & Material Guidance

Healing piercings: Use implant-grade titanium (ASTM F136) or implant-grade steel (ASTM F138) for new and healing piercings. Surgical steel (316L) is suitable for most healed piercings but contains nickel and is not recommended for confirmed nickel sensitivity or unhealed tissue.
Nickel sensitivity: Titanium and PTFE barbells are appropriate alternatives for individuals with known nickel sensitivity or contact dermatitis. Gold (solid 9ct or 14ct) is also appropriate for healed piercings.
Bar length: Incorrect bar length — particularly too short — can cause embedding of end pieces into healing tissue. Do not downsize jewellery without professional assessment if the piercing is still healing.
Plated jewellery: Gold-plated or PVD-coated barbells have a base metal core. The surface layer can wear through inside a piercing channel. Solid material barbells are preferable wherever direct tissue contact is involved.
PTFE and silicone: Flexible barbells are not suitable for long-term wear. Scratched or degraded PTFE can harbour bacteria. Replace regularly and do not use as a primary healing jewellery material.
Professional advice: Consult a qualified piercer before changing jewellery in a new or unhealed piercing. If you experience persistent irritation, swelling, or discharge, seek advice from a qualified piercer or medical professional before switching jewellery.

Ordering & Shipping

UK dispatch: All orders are dispatched from the UK — fast delivery available across the United Kingdom.
First order discount: New customers receive a discount on their first purchase — applied automatically at checkout.
Sizing before you order: Check the gauge and bar length of your current jewellery before ordering a replacement. If unsure, your piercer can confirm the correct measurements at a quick appointment.
Bulk and multipack pricing: Select barbells and fittings are available in multipacks — check individual product listings for availability.
Returns and exchanges: Not specified in provided data — refer to the Monster Piercing returns policy page for current terms.

Disclaimer

FAQ

What is the difference between a curved barbell and a straight barbell?

A curved barbell has a gently arced shaft — typically 35–45 degrees — designed to follow the contour of body placements such as the navel, eyebrow, rook, and daith. A straight barbell has a flat, linear shaft and is used for tongue piercings, industrial piercings, and certain cartilage placements. Using the wrong shape for a placement puts uneven pressure on the tissue and can increase the risk of irritation or migration over time.
What gauge barbell do I need for a tongue piercing?

Most tongue piercings are fitted at 14G (1.6mm). Bar length is typically 16mm or longer for an initial piercing to allow for swelling, then downsized to around 12mm once the piercing has healed — usually at 4–8 weeks, confirmed by a professional piercer. Do not downsize without a piercer assessment if the tongue is still swollen or tender.
What gauge is a standard industrial barbell?

Industrial barbells are most commonly 14G (1.6mm). Bar length varies significantly based on individual ear anatomy — most adults need between 32mm and 40mm, but this should be measured by your piercer. A bar that is too short will pull tight against both piercing points and cause migration.
Are surgical steel curved barbells safe for healing piercings?

Surgical steel curved barbells — including 316L and 316LVM grades — are compliant with the EU Nickel Directive and suitable for most healed piercings. However, they do contain trace nickel. For a healing piercing, or for anyone with a confirmed nickel sensitivity, implant-grade titanium (ASTM F136) is the more appropriate material. The Association of Professional Piercers recommends titanium or implant-grade steel (ASTM F138) for initial and healing jewellery.
What does 4mm, 6mm, or 8mm refer to on a barbell?

These measurements refer to the internal bar length — the wearable length of the shaft between the two end pieces. A 4mm bar is very short, suited to shallow tissue depths in healed flat or cartilage piercings. A 6mm bar is common for healed cartilage placements. An 8mm bar provides slightly more clearance and is often used where there is a little more tissue depth or localised swelling. Bar length should match the anatomy of the specific piercing — not guessed.
What is a PTFE barbell used for?

PTFE (polytetrafluoroethylene) barbells are flexible, nickel-free, and non-metallic — making them appropriate for specific situations where a rigid metal barbell is not suitable. Common use cases include MRI procedures (metal jewellery must be removed or replaced for imaging), contact sports, and pregnancy navel bars where flexibility reduces pressure on changing tissue. PTFE is not recommended for long-term daily wear — the material can degrade and is more difficult to keep fully sterile than polished metal.
Can I wear a twisted barbell in a fresh piercing?

Twisted barbells are generally better suited to healed piercings. The spiral shaft, while aesthetic, makes clean insertion through a fresh piercing channel more difficult and can cause unnecessary trauma to healing tissue. Once a piercing is fully healed, a twisted barbell is a straightforward style change.
What is the difference between barbell earrings and standard barbells?

Barbell earrings is a broadly used term for barbells worn in ear placements — including industrial bars across the upper cartilage, curved barbells in the rook, daith, or helix, and straight barbells in flat or tragus piercings. The jewellery itself is the same type — the term earring simply indicates the intended placement. Most ear cartilage piercings use 16G (1.2mm) gauge; industrial piercings use 14G (1.6mm).
What is a micro barbell?

A micro barbell is a finer-gauge barbell — typically 20G (0.8mm) or 18G (1.0mm) — designed for smaller placements such as nostril piercings, surface piercings, or fine ear piercings. The bar and ends are proportionally smaller than standard barbells, keeping the jewellery subtle and appropriate for the anatomy of finer placements.

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