Brand New aluminum Metal Olympic Clamps Clips 2” , FAST SAME DAY FREE SHIPPING. Description Product Specifications: Material: aluminum alloy+rubber Weight: 13.4 ounces Color: Silver Diameter: 2 inch Packing: 2* Olympic Barbell Clamp Feature: Safety is important when working with weight. Olympic Barbell Clamp Collars are made of aluminum alloy with rubber inserts, Prevent injury by avoid weight from silding during your training session. Rubber increase friction, having extra grip also won’t scratch the finish on your barbell. The quick release mechanism allows you to easily unload your weight, allowing you to swap weight make your training process more coherent