A ball crusher is a device designed to apply pressure to the testicles. It consists of a metal or acrylic cylinder with

a screw mechanism that tightens and compresses the balls. This device is often used in BDSM activities for the

purpose of inflicting pain or pleasure. It is important to note that using a ball crusher should be done with caution

and consent, as it can cause significant discomfort or injury if not used properly.