All-steel construction - This home gym equipment is made of high-quality steel that holds your weight plates tightly and steadily. For secure clamping of weights on Olympic bars, dumbbells, and barbells, strong grip and easy for quick release to change weights. Secure and safe grip - The spring-loaded snap lock provides a superior grip to securely hold the plates in place, allowing for a safer workout. Add the clamps to barbells or free weights and safely perform snatches, squats, deadlifts, and various presses. Strong and sturdy - These barbell collars will not slip during a workout and last longer than many other collars on the market. Improve your balance, coordination, flexibility, and endurance. Perfect for home gym - The compact structure of this equipment makes it a perfect companion to the rest of your home gym equipment. It allows for quick weight plate changes and can be used for various plates, including steel, urethane, or rubber-coated plates. Note - This spring collar is only for 25mm (EXACTLY 1 inch). CHECK THE SIZE (DIAMETER) OF YOUR BAR BEFORE ORDERING. Do not hesitate to contact us for assistance if the spring collar does not fit