--Premium Materials: Made of solid S2 alloy steel, the hex bit set is precision heat treated for superior hardness and durability. The smooth coating helps maintain performance, even after long-term frequent use.\n--Reinforced Core Design: The allen key drill bit set contains a specially designed core section designed to absorb additional torque and reduce the risk of breakage in demanding jobs. It provides consistent strength even when facing difficult or heavy fasteners.\n--Long-lasting Magnetic Grip: Hex drill bits are equipped with reliable magnetic tips. These bits can easily hold screws, ensuring easier and more precise installation, and reducing drops. The magnetic force is long-lasting and stable, allowing you to easily complete a variety of screw tightening tasks.\n--Wide range of uses: The universal 1/4-inch hex shank seamlessly adapts to most standard power tools, suitable for electric screwdrivers, drills and air tools. It is ideal for furniture assembly, automotive repain