Intensify your orgasm with this Steel Ball Head Ring! Designed to fit snug around your penis head to have the ball add pressure and new stimulating sensations. Once put on, it can be used with or without a partner. The Steel Ball Head Ring is made from stainless steel and is 3.2 mm thick. The inside diameter of the ring measures 27/30/32 mm, while the diameter of the ball is 9 mm.