Feature: 1. [Versatile Set] The set includes 6 PH screwdriver bits of different lengths, 25mm, 50mm, 65mm, 70mm, 90mm, 150mm, meeting different needs. 2. [1/4 Inch Hex Shank] These magnetic screwdriver bits feature standard 1/4 inch hex shank, suitable for most manual and electric screwdrivers, electric drills, and more. 3. [High Hardness] These screwdriver bits are made from S2 alloy steel, with a hardness of 63HRC, ensuring durability, capable of withstanding high torsion output. 4. [Anti Slip Design] Each screwdriver bit features a precisely designed anti slip tip, ensuring tight fit and minimal slip for efficient screw fastening and removal. 5. [Wide Application] This magnetic screwdriver bit set is suitable for woodworking, mechanical manufacturing, and automotive repair, easily tightening and removing screws. Specification: Item Type: PH Screwdriver Bit Set Material: S2 Alloy Steel Features: Strong magnetic, strong torsion, anti rusty Compatible Device: Hand electric drills, rechargeable drills, impact drivers, etc. Length: Approx. 25mm / 1in, 50mm / 2in, 65mm / 2-1/2in, 70mm / 2-3/4in, 90mm / 3-1/2in, 150mm / 6in Shank: 1/4 inch hex shank . Package List: 6 x PH Screwdriver Bit