10 - Piece Hex Head Wrench Drill Bit Set: Features 1/4 Quick - Release Shank Magnetic Screwdriver Bits and Bit Holder Covers Outstanding Features - new Quality, Unparalleled Excellence : Every product is - new. We carefully select materials and control the craftsmanship with strict standards to ensure an unparalleled high - quality offering that meets your ultimate pursuit of tools. Ten - Bit Set, All - round Solution : Thoughtfully equipped with 10 hex - key drill bits of different specifications, it can comprehensively meet your diverse usage needs, from delicate and precise operations to regular fastening tasks. The unique 1/4 - inch hex shank design is compatible with various professional tools, ensuring easy installation and smooth operation. Industrial - grade Material, Superior Performance : The main body of the drill bits is made of high - quality S2 alloy steel, forged through a special heat - treatment process, endowing it with excellent torque - bearing capacity and extraordinary hardness, easily coping with high - intensity work challenges. The black phosphate treatment on the surface forms a solid protective barrier, effectively resisting corrosion and rust, extending the service life of the tool, and ensuring long - term stable performance. Precision - made, Durable : Advanced precision processing technology is used to strictly control every detail, from dimensional accuracy to surface finish, ensuring that the product accuracy reaches the leading level in the industry. The drill bits can withstand the strong impact of high - torque pneumatic tools. Even in a frequent and high - intensity usage environment, they are still durable, significantly improving work efficiency and saving you time and cost. Powerful Magnetic Attraction, Convenient and Efficient : With a strengthened magnetic design, the impact hex - bit set can quickly and firmly attract screws, easily solving the problems of screw picking and positioning. Even after multiple uses, the magnetic force remains strong and stable without attenuation, remarkably improving your work efficiency and making the work process smoother. Wide Compatibility, Diverse Applications : The 1/4 - inch standard hex shank is perfectly compatible with various common tools such as electric screwdrivers, manual screwdrivers, electric drills, and air drills, especially the quick - change chuck, allowing you to switch freely between different tools. Whether it is for daily home repairs, automotive maintenance, or various industrial screw - tightening operations, it is your capable assistant. Precise Specifications Material : S2 steel, combining high strength and excellent toughness. Bit Sizes : Covering multiple specifications including H1.5mm, H2mm, H2.5mm, H3mm, H3.5mm, H4mm, H5mm, H6mm, H7mm, and H8mm to meet different application scenarios. Length : Approximately 50mm (1.96 inches). The reasonable length design makes it easy to hold and operate, facilitating more effortless force application. Shank Diameter : Approximately 6.35mm, which closely fits the standard tool interface, ensuring stability without looseness. Friendly Reminders The product dimensions are measured manually, and there may be an error of 1 - 2 cm. This is within the normal range. Please be aware of this and confirm that you do not mind before placing an order. Due to differences in color calibration and display technology among different monitors, the product pictures may not fully and accurately represent the actual color of the product. Please refer to the physical product received. Package Contents Included are 10 exquisitely crafted high - quality drill bits, providing you with all - round support for your work.