Due to the CNC cutting and polishing process, it has a smooth feel. Because it is made of high -quality titanium alloy material, it has high strength and wear resistance and stability. Circle, the screw is flexible between a single disk and a double disk, so it is easy to install it on it, and has strong ability to resist corrosion and wear. Made by using alloy steel materials, the screw is a solid and no time, which can be used for a long time. The length of the product is 0.8 cm, the diameter is 0.8 cm, the length of the nut is 0.65 cm, and the diameter is 1cm. It is suitable for bicycles and mountain bicycles for installation on the chain disk. Set name: Bicycle Chain Screw Material: Alloy Steel: Solid, Good Toughness, CNC Treatment Details: Screw length: 0.8cm/0.31 "(about about the color. Caused small size differences. Age include: 5 x screws 5 x nuts 5 x cushion ring