The skull size is approximately 10mm x 6mm. The catch is cylindrical and easy to put on. It's 16G with a shaft length of 6mm. Body piercing made of surgical stainless steel. The price is for one ear, but if you need two for both earlobes, please let me know ^ ^ Discounts are not available for single items, but a small discount is possible for multiple purchases. Color: Black系 (Black-based) Scratches/Discoloration: None