[Fine Thread Drywall Screw details] Wood screw m3.5, length: 16mm / 20mm / 25mm / 30mm / 35mm / 40mm / 50mm. A total of 245 screws are included in the set.

【Advanced material】: These screws are made from a high quality black steel.The screws are treated so they resist rust and corrosion.They are high strength and will not deform or break under normal use.The aggressive screw twist pattern allows you to drive them fast and to complete your project efficiently and quickly

[Details of screw set] M3 bolt, M3 nut, M3 washer, M4 bolt, M4 nut, M4 washer. Bolt length: 8mm / 12mm / 14mm / 16mm / 20mm. It is a set of 480 screw bolts in total.

Flat head screw with cross hole Material] High quality color galvanized surface. Since the surface is galvanized, it has excellent durability, corrosion resistance, and chemical resistance. Strong, sturdy and resistant to deformation.