This is a carbon steel retaining clip washers set. It is made of carbon steel material, and to use. It is used for fixing the machine parts, no shake, no skid, stable and firmly. With different sizes, it can provide multipurpose tool for your everyday repairing work. Features -Color: Black. -Material: Carbon steel. -Size: About 2.60X2.60X0.10cm/1.02X1.02X0.04in. -Specification: - . - The washer contacts the base material, thereby generating more frictions and resistance to rotation. - Complete specifications, including 7 sizes to meet daily use, . - The design is reasonable, easy to use, repair and replace, it is a very practical kit. - Made of carbon steel material, very good wear resistance, it can be used in the humid environment. - It has a simple design, but very practical in use, giving you a . Package list: 210 x Locking Washers