The Sperm Stopper urethral dilator has a length of 30mm with a ball of 8mm diameter at its tip for ejaculation play. The glans ring has a ball for glans and frenulum stimulation. This Urethral plug for urethral play is made from highly polished, nickel free stainless steel. This Urethral dilator wand is made from highly polished, nickel free stainless steel.