Sipery 10Pcs H4 (4mm) Hex Head Allen Wrench Drill Bit Set, 1/4 Inch Hex Shank, 3 Inch Long, S2 Steel, Magnetic, Multi-Purpose

• Specification - 10Pcs allen wrench screwdriver bits H4, 1/4 inch Hex shank, 4mm / 0.16inch hex head size, 75mm/3inch long.
• Material - Hex head drill bit made of sturdy S2 steel, hex head bit have proper hardness and torsion, not easy to break and wear.
• Magnetizable hex drill bits - The weak magnetic screwdriver bit can be magnetized with magnet or strong magnetic bits.
• Easy to Use - Hex screwdriver bit have magnetic, it can be firmly fixed on screwdrivers and keep hexagon screws stuck to them, can improve your work efficiency.
• Multi Purpose - Allen screwdriver bit fit for electric screwdrivers,hand screwdrivers, electric drills, air drills, cordless drills, impact drivers and so forth.

Specification Package: 10Pcs allen wrench drill bits H4 Material: S2 Steel Shank Type: 1/4 inch Hex shank Hex shank size: 6.35mm / 1/4inch Head Type: Hex Head Hex Head Size: H4 (4mm / 0.16inch) Total Length: 75mm / 3inch Feature - Drill bits are heat treated for durability, has high hardness, not easy to wear. - Screwdriver bit with magnetic, easy to suck the screws. - Not only can you use the bits on hand tools, you can easily insert them to any 1/4 inch hex shank power drill to use. - Hex bit can be used for engineering, machinery, production lines, furniture and maintenance of household appliances. Kindly Note: Please allow 1-2mm errors due to manual measurement, thank you for your understanding!