Exquisite Material: The M3 screws set is made of high-quality stainless steel, with high hardness, not easy to break or deform, corrosion-resistant, rust-resistant, with long-lasting durability and stabilityHex Button Head Socket Cap Screws and Nuts Kit: Button head socket cap screws design, more balanced force, can use the equipped hex wrench to easily complete the installation workHex Nuts and Flat Washers: The M3 screw kit is used with nuts and washers, nuts can make your installation more precise, and washers can increase the contact area, protect the bolts, prolong the service lifeWidely Used: Suitable for assembly, maintenance, and DIY work in offices, factories, homes, and workshops. Widely used in the field of machinery, electromechanical equipment, marine equipment, engineering machinery, automobiles, motorcycles, etcPackage Includes: A total of 570 pcs pieces, sizes include m3 x 6mm/8mm/10mm/12mm/14mm/16mm, and corresponding sizes and quantities of hex nuts and washers, 1 x hex wrench, a sufficient quantity to meet daily use needs