The Knave Ballbusting Top, a product of The Knave, a brand recognized for its innovative and high-quality BDSM gear, offers a specially designed structure to ensure safety and effectiveness. Typically, this device is made from durable materials such as metal or heavy-duty rubber and is engineered to fit securely around the testicles.
By staying at the "top" of the arena or movement arc, the Knave uses gravity to multiply their damage output.