Package Include: 7 x Anti Slip Magnetic Screwdriver Bits (25mm,50mm,65mm,70mm,90mm,127mm,150mm, each size 1 piece) Specifications: Size: 25mm,50mm,65mm,70mm,90mm,127mm,150mm Sharpness: PH2 Material: S2 High Alloy Steel HRC:58-62 Handle Diameter:6.35mm Features: Hex Screwdriver Bits made of S2 Alloy Steel; Package included: 7 x PH2*25 -150 mm(Sharpness*Length) Phillip Screwdriver bit. Cross Headed Screwdriver Bits with magnetism and skid resistance, magnetic bits can be firmly fixed on screwdrivers. Striped Head has an anti-slip function. It can remove all common sizes of damaged or peeled screws. The screwdriver bits have strong magnetism, it can catch the screw easily and quickly, and fix it to prevent the drill bit from slipping and improve the work efficiency. PH2 Magnetic bits adopt S2 high-grade metal products, and the whole reflection is hardening. These bits fit for electric screwdrivers, hand screwdrivers, electric drills, air drills, and so forth. Anti-Rust Drill Bits, Made of high‑grade alloy steel, integral induction hardening with strong wear resistance.