| Piercing Location |
Gauge (Thickness) |
Recommended Inner Diameter |
Measurement Tip |
| Septum (Nose) |
16G (1.2mm) |
6–7mm |
Measure the distance between the inside walls of your piercing at rest. Most adult septa require 6–7mm for a snug, centred fit. |
| Helix (Outer Ear) |
16G (1.2mm) |
6–7mm |
Helix piercings typically have similar spacing to septums. A calliper tool or ruler can help you measure the exact gap. |
| Tragus (Ear Canal Bump) |
16G (1.2mm) |
5–6mm |
Tragus piercings are often tighter due to the smaller cartilage anatomy. Start with 5mm if unsure; 6mm if your tragus is larger. |
| Daith (Inner Ear Curve) |
16G (1.2mm) |
6–8mm |
Daith piercings vary widely in anatomy. Some sit shallow (6mm), others deeper (8mm). Professional piercer measurement is recommended. |
| Conch (Ear Bowl) |
16G (1.2mm) |
8–12mm |
The conch's larger cartilage area accommodates bigger inner diameters. Vertical conch piercings typically use 10–12mm; horizontal, 8–10mm. |
| Rook (Inner Ear Ridge) |
16G (1.2mm) |
6–8mm |
Rook anatomy varies. A professional piercer can measure your specific anatomy for precise sizing. |
How to Measure Your Inner Diameter: Use a digital calliper tool (available inexpensively online) or visit your professional piercer for a precise measurement. Measure the distance between the inner walls of your piercing at rest — this is your inner diameter. If you're between sizes, your piercer can advise whether to round up or down based on your anatomy.
First-Time Clicker Buyers: When in doubt, consult your professional piercer. They can measure your exact anatomy and recommend the ideal inner diameter for your specific piercing.