The Master Series Amulet Device Adjustable Barrel Clamps provide you with the framework for a wide array of torments. These heavy duty clamps feature a dangling ring at their base that affords you countless bondage options. Let the rings hang and jingle as your sub moves around. Attach a chain from one ring to another that will swing with their movements and provide a slight tug, or a set of hanging weights for even more of a pull. The rings are perfect for attaching independent ropes or chains to create any nipple torture setup that you can imagine. <br /><br />The clamps are highly adjustable via their threaded barrels. No forgiving spring loaded clamps here! Just screw them down tight for unrelenting pressure! Their rubber coated tips keep your lover from having to remember their safe word at least for now. Measurements 4.57 inches overall length, including rings, 1.12 inches inner diameter ring pulls, 0.55 inch diameter barrels. From XR Brands.