[Premium Material] - The Phillips Hex Shank Screwdriver Sets are made of S2 alloy steel, which is a commonly used material in high hardness hardware. High hardness, non-slip, large torque and long service life and durable. [Lightweight, Convenient and Refined] - The cheap 8-piece set (50mm): Various sizescan meet all your requirements; Mini size makes it easy to carry or store anywhere.Each edge can be precisely locked screws, no damage to screw and screwdriver head. [Strong Magnetic] - It is convenient and quick to complete the job. It is suitable for deep screw holes. When the screws are loose, the screwdriver can suck the screw and pick up, eliminate a lot of troubles. [Essential Handy Tool] - Ideal magnetic screwdriver for electronics, computers, watch repair, jewelry repair, eyeglass repair, accessory and fixing anything with micro screws, for electric screwdrivers , hand screwdrivers, electric drills, pneumatic drills, etc. [Concrete Application] - PH00 is suitable for precision devices; PH0 is suitable for small appliances and precision devices; PH1 is suitable for large and small devices; PH2 is suitable for screws and large household appliances. Note: The data is all manual measurement, please allow 1 - 26cm error, due to the difference in light and display, it there will be some color difference, depending on the physical object received.