This 415-piece metric set screw assortment kit includes the most commonly used sizes (M3, M4, M5, M6, M8) and is made from high-quality stainless steelwith excellent rust, oxidation, and corrosion resistance. Featuring a hex socket design with clean, burr-free threads for a secure, non-slip grip, the screws come neatly organized in a sturdy transparent storage box with a size chart for easy identification. Ideal for electricians, plumbers, builders, and DIY enthusiasts, the kit is perfect for installing or repairing door handles, faucets, light fixtures, and various plumbing or bathroom fittings. Included are five Allen wrenches and handy tweezers for quick and convenient use