High Quality Material: These sports clip spring collars are made of premium ABS and steel, sturdy and durable, exquisite workmanship, rubber grips provide easy and comfortable removal. Strong and Sturdy: These dumbbell spring collars wont slip during a workout and last longer than many other collars on the market. Improve your balance, coordination, flexibility and endurance. Easy to Install: Simply gently press the 25mm spring clip sport collar clips onto the workout equipment and release, provide a good grip keeping the bumpers in place, wont slip. Standard Size: These barbell exercise collars are designed for 25mm/1 inch barbell, not threaded barbell ; Please confirm your equipment size before purchasing. Wide range of use: whether it is barbell lifting, squats, etc., as long as your fitness equipment is 25 mm/ 1 inch, these disc stop barbell collars can improve your balance, coordination, flexibility. Product Features: The special collar design ensures secure attachment of the plate to the bar. Made of quality ABS plastic and metal, this spring clamp is durable and stable. These gym Quick release clips are designed for 25mm / 1 inch bar, not for threaded bar. Please confirm the bar size of your equipment before purchasing. Specification: Product Name: Barbell Spring Collar Clip Material: Spring Steel + ABS Plastic Main Color: Silver with Black Hole Diameter: 25mm(1 inch) Size: Approx. 8.8 x 1.8cm/3.5 x 0.7 Inch Weight: 195g(6 Pieces) Package Included: 6 x Spring Clips for Dumbbells Note: 1. Please allow 0-1mm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Take the real one as standard.