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. Measurement : - 4.5" high - 4" wide -opening measures 2.75 inches in width Material:Metal Color : Grey.