Features:These bolts,gaskets and nuts are made of 304 stainless steel of good rust and corrosion resistance.Can be used in electronic and woodworking and other industries.The set includes different sizes of these tools to meet your different needs.They are integrated in a box,portable and convenient to access and store.Delicate and practical, high hardness, firm and strong.Specification:Item Type:Bolt,Nut,Gasket SetMaterial:304 Stainless SteelThread Size: M2 M2.5 M3 M4 M5 Package List:20 Pcs M2 Gasket20 Pcs M2.5 Gasket20 Pcs M3 Gasket10 Pcs M4 Gasket10 Pcs M5 Gasket20 Pcs M2 Nut20 Pcs M2.5 Nut20 Pcs M3 Nut10 Pcs M4 Nut10 Pcs M5 Nut20 Pcs M2x6 Bolt20 Pcs M2.5x8 Bolt10 Pcs M3x8 Bolt5 Pcs M3x12 Bolt5 Pcs M3x16 Bolt5 Pcs M4x8 Bolt5 Pcs M4x16 Bolt5 Pcs M5x8 Bolt5 Pcs M5x16 Bolt