High quality: These grub-screwdriver are made of 304 stainless steel for protection against rust, durability, and long lifespan, with oxidation that has good resistance to corrosion and extension in many environments. Main Application: Suitable for door knobs, faucets, lamps, knobs, reprint, weapons, plumber and other small repairs in the shop, garage or repair the closure of furniture for the home, etc. Feature: The screws have thread blades that cut in a soft material, such as sheet metal, plastic or wood. Quantity: Total approximately 5 pieces of self tapping screws included in package that is convenient to carry and storage. Know your choice: There are 8 sizes (please check the detail size on the description or the picture so you can manage your project for, Manufacturer: Hilitand