Features Carbon steel material provides high strength and good durability, available in harsh environments. Precision threads can easily pass through various materials such as plastic, wood, soft metal and more. High hardness, not easy to deform. There are 450 pieces of screws in 9 sizes to meet your different needs, suitable for long-term use. All screws are classified by their size and packed in a plastic storage box, convenient to carry and use. Specification: Condition: 100% Brand New Material: Carbon steel. Screw Type: Cross Head Shape: Pan Head Weight: approx. 251g/8.8oz Size Quantity: --M3 x 5, 50 pieces --M3*6 50pcs --M3 x 7, 50 pieces --M3*8 50pcs --M3*10 50pcs --M3*12 50pcs --M3*14 50pcs --M3*16 50pcs --M3*18 50pcs Package List: 450 x Self-tapping screws with box. --M3 x 5, 50 pieces Package List