The Barbell Collar is easy to operate with environmental material, the surface is beautiful and smooth. Quickly change weights: The quick release lever makes it quick and easy to swap out weights Fits 2-inch weight bars: The clamps have a 2-inch diameter and fit a 2-inch barbell or hex bar Secure and Non-slip: Safety is the most important during weight exercise. The barbell clamp locks securely onto the bar to make sure the weight plates does not slip. It can prevent the plates from wobbling while you are exercising at the same time. Easy to Install: You can gently lift the lock latch & press down on the latch to secure the collar in a second. You can quick lock and release the barbell clamps effortlessly.Durable Material: The Weight Clamp are manufactured from high-strength plastic and solid nylon after casting and high-pressure processing. The durable cast body and soft elastomer grip pads make the collar virtually indestructible! Widely Used: The 2 inch barbell clamps compatible with standard traditional Olympic weight bar, securely fitting on any 2 inch/50mm barbells. Perfect for strength training, power lifting, crossfit training, olympic Lifts, overhead press.