This device is primarily used for CBT. The Ball Crusher is just that a ball crusher. Insert either the scrotum alone or both the scrotum and penis into the device and utilize the bolts to add pressure. Crush both your balls on the clamp by bringing the bar closer. Feel the best ball crushing ever!This Ball Clamp will securely hold 3mm 4mm 5mm 6mm and 8mm balls. Dimensions package13 50 x 9 20 x 1 50 cmWeight package136 gramProduct dimensions7 5 x 1 x 7 5 cmProduct weight125 gramSpecificationsSpecifications- Adjustable length to 8 5 cm- Width: 1 cm- Material: Stainless Steel