Secure Your Weights: The Marcy Olympic Barbell Lock Collar Clips provide a tight grip, preventing weights from sliding off during intense workouts. Universal Compatibility: With a 2-inch diameter, they fit most Olympic barbells. Professional-Quality: Made with tough nylon resin and pressure pads to conform to the weight bar. Adjustable Tension: Press the latch down to snap the clips shut and use the adjustable knob to tighten or loosen grip on the sleeves Easy to Take to any Workout: Don't hesitate to take your Marcy Olympic Lock Collar Clips to the gym or to any place you workout for a safe and secure workout!