Add an extra element to your home gym strength training routine with the SteelBody(R) OBC-5 Lock-Jaw Olympic Collars. The collars are tailored to fit any Olympic size bar or dumbbell handle and will help take your strength training to the next level. Easy, Inclusive Adaptability Fits all 2" Olympic barbell sleeves Fast acting lock and release Solid nylon resin frame Durable Functionality Injection molded pressure pads for superior durability Recommended for steel, urethane or rubber coated plates Additional Details Manufacturer's 2 Year Part Warranty