Made from the best, rubbery, warm Liquid Platinum Silicone the Clone Duo 2 Piece Ball Stretcher has a cone shape grips tight where you want and cups your sack on the other balls. 2 pack so you can stack or combine for more ball stretching fun, Stacks for gradual stretch, add more for more stretch. Height: 1. piece 36 mm, Height 2pieces stacked: 72 mm, Width: 61 mm, Length: 61 mm and a weight of 2-pack total: 150 grms. These measurements are as accurate as possible, as these silicone toys are handmade so slight size variations can occur.