Description:Fit for most body piercing jewelry including Tongue rings,Nipple Rings ,Belly Button Rings High polished smooth surface,lasting color retention,so bright.Hypoallergenic 316L stainless steel made, lead andmetal to keep your body stay health.Material: Stainless SteelBall diameter: 5mm / 0.20 inch; the screw hole size is 14G(1.6mm / 0.06 inch)Package Includes:20 Pieces Balls(4 Pack)Note:Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.