Imagine the seductive combination of leather and metal, collar and clamp...pleasure and pain. esin.M has your fix with the Coveted Collar and Clamp Union. This two in one set is made with submission in mind. The quality leather collar secures by means of a buckle and has two 12 inch chains attached to a front D-ring. Ending the chains are adjustable nipple clamps that are quickly and easily made tighter or more loose with thumb screws, so you can decide just how much punishment your naughty one requires. Measurements: Fits necks 14-18 inches. Material: Leather, Metal.