Feature:1. Various Sizes: Has 660pcs flat washers in M3, M4, M5, M6, M8 and M10 sizes, meeting your various work needs.2. Good Material: Adopting 304 stainless steel material, very durable with wearing, corrosion and long term use.3. Broad Utility: Suits perfectly for indoor decoration, outdoor construction, electrical maintenance and so on.4. Simple Storage: The storage box will store all the washers in an orderly way, thus no worrying about losing.5. Easy Carrying: Comes with light weight and compact size, the carrying is very convenient for your daily work.Specification:Item Type: Flat WasherMaterial: Stainless SteelSpecification and Model: Model M3 M4 M5 M6 M8 M10 Quantity 300 150 80 70 30 30 Package List:660 x Flat WasherNote:Keep away from children, and match the appropriate size before use.