Ball Torture for tough guys. This oval ball stretcher makes the application even more difficult. In addition, the spikes can be screwed to the desired depth using an Allen key and also removed. Rivet length 25mm. Additional toys can be attached to the ring and it can also be removed. The inner diameter of the stretcher is 25×50 mm, the height is 25mm. Material thickness 8mm. The total weight is 270 grams.