Bodfx Piercings Gauge Stainless Measuring Wheel. Measures tapers, tunnels and plugs. Stainless Steel - Measures Tunnels, Plugs Tapers, Earrings etc Measures Sizes 18g 16g 14g 12g 10g 8g 6g 4g 2g 0g 00g 7/16 Measurements in mm on the back Lifetime warranty against defects Satisfaction Gaurantee