If you love a firm grip on your shaft during the action? The Cock Tube by Sport Fucker was designed just for you! We've combined a cockring. shaft ring and ball tugger into one sleek package. Made of high quality silicone with the perfect balance of stretch and hold. this bad boy features the following:- 3.8 cm (1.5'') cockring opening- 3.8 cm (1.5'') shaft ring opening- 3.2 cm (1.25'') ball stretcher opening- 2.5 cm (1'') ball stretcherGet hard. stay hard. GO HARD!