The Sperm Stopper will give yourself and your partner a wild experience. No Piercing is required you wear this ring. The ring goes around your the head of your penis with an 5/16" ball (sperm stopper) on a swivel that inserts into the opening of your urethra The ring is 1 inch in diameter but can be replaced if you have a better fitting captive ring. This piece is totally made out of 316LVM Surgical Steel.