551PCS Industrial tools:1 x wrench tool roll & 550 x Flat WashersHeavy Duty Material: Our roll up tool pouch made of waterproof 600D Oxford cloth material, which is durable and wear-resistant, perfect for carrying hand tools and other small to medium-sized items.An internal elastic strap protecting and organizing your tools both fold and unfold.Large Capacity: The wrench roll has 22 pockets to organize smaller tools or accessories. Organize a variety of tools, screwdrivers, sockets, tire flat tools wrenches, pliers, wrenches and etcEasy to Roll and Carry: Two elastic strap closure fastens your tool roll organizer when roll up, not fall drop out. It's convenient and has a handle on the top for easy carrying.Flat Washers: Our 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.Quantity:M2:100pcsM2.5:100pcsM3:100pcsM4:100pcsM5:50pcsM6:50pcsM8:30pcsM10:20pcsfor quick access and storage.colour:WhiteMaterial:nylonSize: M2 M2.5 M3 M4 M5 M6 M8 M10wrench tool roll: Colour:blueMaterial:600D Oxford clothSize:58.5 x 35.5cmPackage Contents:1 x wrench tool roll100x 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 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.