This is the most extreme CBT device we offer. To the unfortunate slave, this spiked ball weight secures around the penis and ball sack like a cock ring. Yet, it has a little twist from the ordinary. This device has 6 sharp removable steel spikes that can inflict pain when screwed in. The depth of the spike can be adjusted with a couple of turns. Can be set to barely touch the ball sack or to the max driving the spikes into the ball sack. It can also be used without the steel spikes. The middle spike on each side has a small hole for attachment options. Opens and closes with included allen wrench. Will not come off without the allen wrench key. Weighs 10 oz. Diameter is 1 3/8 inches