1. High Quality Material: Ball end hex screwdriver bit set is made of high quality steel material, high hardness, rustproof, strong and . 2. Professional Design: Hex screwdriver bit set features magnetic head, professional manufacturing, fine workmanship, high precision. 3. Strong Magnetic: The magnetic head can easily hold the screws during installation, can improve your work efficiency, save your energy. 4. Special Ball End: Ball head hex shank bits can tilt 25 degree angle operation suitable for small space operation, convenient for using. 5. Widely Use: Hex head wrench drill bit set can be used for electric screwdriver, manual screwdriver, electric drill, and other tools. Specification: Item Type: Ball End Hex Screwdriver Bit Material: steel surface plating anti rust Head Type: Ball End System: Metric Shank Dia: Approx. 1/4in / 6.35mm Hardness: About 56-58 HRC Applicable Screw: H3.0/4.0/5.0/6.0(mm) Characteristic: High precision, , magnetic, multipurpose, magnetic bits, can easily hold the screws during installation Fitment: Universal fit for electric screwdriver, manual screwdriver, electric drill, air screwdriver and other tools. PackageList: 4 xBall End Hex Screwdriver Bit Note: The product is multi‑directional, the ball head design rod connection is narrow processing, the maximum torsion is slightly lower than the straight rod, if used for power tools, please note torsion overload.