• Made of 410 stainless steel, these screws are rust and corrosion resistant, ideal for harsh environments. • The sharp and precise thread ensures a firm fit and prevents deformation during use. • Includes 420 self-drilling screws of different lengths: 150 of 4.2x13 mm, 100 of 4.2x19 mm, 60 of 4.2x25 mm, 50 of 4.2x32 mm, 30 of 4.2x38 mm, and 30 of 4.2x50 mm. • They come organized in a transparent storage box for easy access and protection. • Ideal for applications in the home, office, boat assembly, machinery, furniture, repairs, and DIY projects. • Package dimensions: 14 cm wide, 3.7 cm high, and 20 cm long.