Colour:Silver + black Material:Stainless steel + plastic Size:Ring diameter: 25mm Package Contents: 8*Dumbbell Spring Collars Non- Material: Plastic handle, environmentally friendly and safe to use. Widely : This product is designed to that you are absolutely safe during exercise. It is suitable for gyms, powerlifting, -fitting, weightlifting, etc. Just the Size: You will get 8 pieces standard 1 inch (25 mm) spring collars, the spring clip collar can be firmly fixed on any 1 inch barbell or hex bar.Please read every product image and measure your weight bar before purchase, make sure the bar is exactly 1 inch (25 mm) in diameter Sturdy and Durable: These barbell collars will not during use, hesitating to be made of stainless steel, this item has a longer life than many other collars on the market. Can perfectly improve your balance, coordination, flexibility and endurance. matte black plating finish among all chrome plating on the market.