• Complete 525-piece set including screws, hex nuts, spring washers, and M5 flat washers. • Made of high-quality solid carbon steel to ensure strength and durability in demanding tasks. • The hex socket head design allows for stable and uniform tightening, facilitating assembly even in tight spaces. • Includes M5 screws in various lengths: 8 mm, 10 mm, 14 mm, 16 mm, 20 mm, 25 mm, and 30 mm. • Organized in a sturdy storage box with separate, labeled compartments to quickly locate each piece. • Versatile and suitable for mechanical repairs, vehicle maintenance, home appliance installation, and DIY projects.