STANDARD METRIC SYSTEM - Comply with ROHSWEEE standard. Drive type: hexagon socket, head type: button head/hex socket low cap. 12 SIZES - M34/5/6/8/10/12mm, 55 per size. m314/16/18/20/25/30 mm, 30 of each size. 300 washers + 300 nuts . RUGGED AND DURABLE - Made of 304 stainless steel, high strength, corrosion resistance, oxidation resistance and long service life. EASY TO STORE - With a transparent storage box, it is easy to identify the model and use. WIDELY USED - Suitable for furniture maintenance, mechanical instruments, electronic products, DIY projects, communication equipment, etc. Specifications: Material: 304 stainless steel Head Style: Button Head/Inner Hexagon Low Cap Type: M34/5/6/8/10/12/14/16/18/20/25/30 Box size: 19.513*3.6CM Weight: 643.2g Quantity: 1110 pieces Package Included: M3 x 4/5/6/8/10/12mm, 55 pcs of each size m3 x 14/16/18/20/25/30 mm, 30 pcs of each size 300 x washers 300 x nuts 1 x wrench 1 piece * tweezers 1 x Clear Storage Box Note: It does not