【Premium Material】: Our barbell clamps are made of high-quality, durable materials that provide a secure grip on your bar, allowing you to focus on your training. 【Locking】: The barbell lock features a secure mechanism that holds weight plates firmly in place. These clamps are easier, faster, and safer to use than traditional spring clips. 【Quick Release Design】: Featuring a quick release and locking system, these barbell collar clips can be opened and closed with one hand, enabling fast and convenient installation without slipping during use. 【Applicable Size】: 4 x 25mm quick release barbell clamps. Compatible with barbells, dumbbells, and curl bars with a shaft diameter of 23mm–25mm. Please verify your equipment size before purchase. 【Wide Applicability】: Suitable for weightlifting, powerlifting, gym workouts, fitness, bodybuilding, and more. Ideal for cross-training, lifts, overhead press, deadlifts, bench press, and other exercises.