An excellent replacement for lost, bent, or broken hexagon screwdriver bits. Those screwdriver bits are made of S2 alloy steel material with sandblasting finish, high hardness and durability, suitable for industrial use. The drill bit set can be matched with an interface 1/4" torque wrench, ratchet wrench, slide bar, power wrench, and drive square head. 1/4-inch hexagonal bits feature a positioning nut, adjusting screw rod, and lock nut, a good helper for DIY hand-making and household maintenance.
