New-Style Hinged Ball Stretching Weights, Surgical Steel Male Testicle Scrotum Pendant Testis Stretcher Penis Ring - A completely newly designed pin-hinge makes this ball stretcher even easier with less pinching. Just hold your sac away from the hinge when you close it, then lock it tight, and you are good to go. Get this new design to try, and see which you prefer. We already know the answer. :-) Simple as Opening and Closing a door. Materials: 316L Surgical SteelCommon Uses: Ball & Scrotum StretchingDimensions: Many Sizes AvailableActual Weight: Found at Bottom of DescriptionMirror-Like PolishAllen Wrench is Included The Hinged Ball Stretcher comes in many size and weight options, These can easily be stacked as well to help achieve your goal. Made out of 316L Surgical Stainless Steel. Height X Inside DiameterActual Weight10 x 265.2 Ounces10 x 285.4 Ounces10 x 305.6 Ounces10 x 325.7 Ounces10 x 345.8 Ounces10 x 366.5 Ounces10 x 386.8 Ounces10 x 406.9 Ounces-----------------------------------15 x 267.6 Ounces15 x 287.9 Ounces15 x 308.4 Ounces15 x 328.8 Ounces15 x 349.1 Ounces15 x 369.4 Ounces15 x 389.9 Ounces15 x 4010.0 Ounces-----------------------------------20 x 2610.4 Ounces20 x 2810.8 Ounces20 x 3011.3 Ounces20 x 3212.0 Ounces20 x 3412.3 Ounces20 x 3612.6 Ounces20 x 3813.3 Ounces20 x 4013.4 Ounces-----------------------------------30 x 2615.6 Ounces30 x 281 Pound 0.4 Ounces30 x 301 Pound 1.2 Ounces30 x 321 Pound 2.2 Ounces30 x 341 Pound 2.5 Ounces30 x 361 Pound 2.6 Ounces30 x 381 Pound 3.4 Ounces30 x 401 Pound 4.1 Ounces-----------------------------------40 x 261 Pound 4.9 Ounces40 x 281 Pound 6.0 Ounces40 x 301 Pound 6.8 Ounces40 x 321 Pound 8.1 Ounces40 x 341 Pound 9.2 Ounces40 x 361 Pound 9.7 Ounces40 x 381 Pound 10.9 Ounces40 x 401 Pound 11.3 Ounces-----------------------------------50 x 261 Pound 10.3 Ounces50 x 281 Pound 11.3 Ounces50 x 301 Pound 12.8 Ounces50 x 321 Pound 14.2 Ounces50 x 341 Pound 14.8 Ounces50 x 361 Pound 15.9 Ounces50 x 382 Pounds 1.4 Ounces50 x 402 Pounds 1.9 Ounces