Rimba Bondage Play - Stainless Steel Ballstretcher with Allen Key (height 4 cm) A ball stretcher should be attached around the man's scrotum, which creates a "pulling" sensation on the testicles. This ball stretcher is a 2-piece, so it is closed over the balls instead of pulling the balls through the opening. The smaller 35 mm opening also means that most men will not be able to remove the ball stretcher without opening it.  The allen key is included.This ring is available in 3 different heights: #7380Weight: ≈ 274 gramHeight: 15 mmInside diameter: 32-35 mm #7381Weight: ≈ 433 gramHeight:  25 mmInside diameter: 32-35 mm #7383Weight: ≈ 678 gramHeight 40 mmInside diameter: 32-35 mm