Valuable M4 Screws Kit You will get 480pcs M4 x 6mm/8mm/12mm/16mm/20mm/25mm/30mm hex socket head cap screws with matching hex nuts, lock washers and flat washers, it has enough variety to cover all your needs. High Quality Materials: VGBUY m4 screws are made of high-quality 304 stainless steel 18-8,which features is corrosion, rust resistance,and high hardness,they can with stand heavy loads and offer a long service life. Widely Used: This m4 screw assortment can be used for various builds & fix it projects,including 3D printing and RC car hobbyists,small electronics projects, machinery repair, DIY projects, etc. Organized Storage Box: M4 screw kit are packed in a reinforced labeled box with separate compartments and sturdy latches, not scattered or lost, the organized storage case makes it easy to keep everything tidy and accessible. Easy to Use: M4 socket head screws are feature a design with socket head that provides better torque transmission and more stable performance.And will not easily deform and slip during use. You just need to insert the screw into a pre-drilled hole and turn it clockwise using the hex wrench.