Quick release: Snap lock design makes it easy to get clamps on and off the bar with just hand, even when hands are sweatyEasy to Use: Slides on and off barbell smoothly without scratches. must have for weight liftersFits: These sturdy clips fit snugly onto 5cm/1.97inch Barbell sleevesSecure: Holds weight plates in place to prevent sliding off of the barbell during heavy or lifts like squats, bench, snatchesWide Application: Suitable for participate in power lifting, weight lifting, athletics of all types, and bar workouts. Specification: Material: Metal Size Chart: Inner Diameter 50mm/1.97inch Package Includes: 2x Barbell Collars Note: Please allow slightly errors due to manual measurement and different monitors. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.