Give your balls a good compression with this stainless steel ball crusher piece. For those that love CBT this is a simple and very effective device. Just simply turn the screw mechanism, counter clockwise, to make the bar move inward, applying deep pressure against the balls. When you're ready to release them just reverse the direction of the screw. This crusher is 4.5" high and 4" wide with an inner opening of 2.75" x 2.75". The closure clamps down all the way to zero movement. The ring at the bottom can also be used to attach additional weights to for more sensation. Weights sold separately.