This chrome cock cage features three different sized ‘o’ rings, the largest goes around the penis and balls, the middle sized ring goes around the balls providing the wearer with a pressure sensation and the third goes around the base of the penis to help you maintain the kind of erection that lasts for extended periods of time, Base ring is 2″(5cm), Ball ring is 1.75″(4.45cm) and the Shaft ring is 1.5″(3.8cm), Silver