Feature●Type/Size: The screw kit contains 5 sizes 145pcs. 55pcs #8×1/2", 30pcs #8×3/4", 30pcs #8×1", 20pcs #8×1-1/4", 10pcs #8×1-1/2".●Cross groove design, easy and fast installation. It can speed up the fastening process of objects. Self-drilling screws have very sharp and strong threads and can be drilled directly into metal surfaces without pre-drilling.●Application: Self-tapping screws can be widely used in wood, plastic, metal.The metal screw kit can make the connection between metal and metal, wood and metal, and metal and wood firm.●Material: Screws are made of galvanized carbon steel. The screws have better stability, durability, corrosion and wear resistance.●Package includes: storage box packaging. Screws are sorted by size and stored in compartments of the box. There are explanatory drawings. Easy to identify and store.Description