Features Carbon steel material provides high strength and good durability and is available in harsh environments. High hardness, not easy to deform. The threads can easily go through various materials such as plastic, wood, soft metal and more. All screws are sorted by size and packed in a plastic case, convenient to carry and use. There are 450 pieces of screws in 9 sizes to meet your different requirements, suitable for long-term use. Specification: Condition: 100% Brand New Material: carbon steel. Screw type: crossed Head shape: panhead. Weight: approx. 251 g / 8.8 oz. Size Quantity: --M3 x 5 50 pieces. --M3 x 6 50 pieces. --M3 x 7 50 pieces. --M3 x 8 50 pieces. --M3 x 10 50 pieces. --M3 x 12 50 pieces. --M3 x 14 50 pieces. --M3 x 16 50 pieces. --M3 x 18 50 pieces. Package list: 450 x self-tapping screws with box. Package List