These Unique Clamps Are A Favorite In The Bdsm World. Originally Used For Sheet Metal, These Adjustable Pressure Clamps Will Put As Much Or As Little Pressure On The Nipples Of Your Plaything As You Desire. Just Slide The Center Up Or Down To Control The Pressure, Then Close The Clamp With The Side Lever. The Sturdy Metal Will Hold Strong, With A Rubber Tipped End For Comfort And A Good Grip. The Center Chain Will Look Beautiful Gracing Their Chest, To Which You Can Attach More Weights, Or Simply Tug On To Lead Them. Measurements: 19.5 Inches In Total Length, Clamps Measure 3.5 Inches Long And Open To 0.5 Inches Wide. Material: Steel, Rubber. Color: Grey.