4pcs professional and practical spring collars for dumbbell bars, which are made of , will not easy to rust, offers a grip to securely hold weight plates in place. ABS material handle helps you assemble and disassemble easily. Features - Brand: WAKAUTO. - ColorSilver - Material: Steel and ABS. - Size: 8.00X9.00X3.50cm/3.14X3.54X1.38in. - The 4 spring buckles are here to help you prevent weight plates from sliding off the during weightlifting. - Compact size, convenient for you to use with dumbbell and barbell, simply squeeze it, you can replace the weight plate. - material, durable and not easy to deform, rust and , our barbell buckle with repectable quality. - They will fit all standard 28mm barbell or dumbbell bars, ABS handle allows comfortable grip and easy to operate. - Simple but effective, aims to provide a strong grip holding your weight plates in place on barbell/dumbbell. Package list: 4 x WAKAUTO Spring Collar