set2: 10 x Flap Wheels & 100 x M2 x 5mm Flat Washers + 100 x M2.5 x 5mm Flat Washers + 100 x M3 x 8mm Flat Washers + 100 x M4 x 8mm Flat Washers + 50 x M5 x 10mm Flat Washers + 50 x M6 x 12mm Flat Washers + 30 x M8 x 16mm Flat Washers + 20 x M10 x 20mm Flat WashersOur flat washers are suitable for metric M2, M2.5, M3, M4, M5, M6, M8,M10 screws or bolts.which is abrasion resistance and corrosion resistanceflat washers are resistant to moisture, corrosion and corrosion and are used in a wide range of applications. Can be used in a variety of household appliances: 3D printers, drones, robots and other artificial intelligence products. Can also be used for furniture, various electronic instruments, computer DIY (such as computer motherboards). Nylon flat washers for screws are not only durable, but also prevent electrical shorts between metal and metal.flat washers Easy to install, with storage compartment for easy storage of these gaskets for safer storage.Bore diameter: Approx. 22.23 mm.flat washers is very rugged and widely used, it can be used in a variety of household appliances, precision instruments, electronic equipment, drones, 3D printers, robots, artificial intelligence equipment.flat washers for screws can also be used to assemble computer DIY, computer motherboard. and nylon gaskets can effectively prevent electrical contact short circuit between metal and metal.Quantity:M2:100pcsM2.5:100pcsM3:100pcsM4:100pcsM5:50pcsM6:50pcsM8:30pcsM10:20pcsfor quick access and storage.Size: M2 M2.5 M3 M4 M5 M6 M8 M10Tips: The product contains small parts, please do not let children under 5 years old play, so as not to eat.Grit: 120Colour: blue/WhiteMaterial: Calcined blue sand/nylonFlap Wheels Size: 125x22mmPackage Contents:10 x Flap Wheels100 x M2 x 5mm Flat Washers100 x M2.5 x 5mm Flat Washers100 x M3 x 8mm Flat Washers100 x M4 x 8mm Flat Washers50 x M5 x 10mm Flat Washers50 x M6 x 12mm Flat Washers30 x M8 x 16mm Flat Washers20 x M10 x 20mm Flat WashersOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.