Constructed from and quenched chrome vanadium steel with a - sandblasted , high hardness and built to last. This drill nut driver bit designed to tighten or loosen s, bolts, hooks quickly and effectively. 1/4Inch hex shanks fit quick-change/release and firmly lock of standard chucks , drill, driver and screw-. Applicable for installing in those hexagon tools, such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, manual screwdriver, and more. Deep groove. Ideal For Extended Reach Applications. High quality chrome vanadium steel bushing, and long service life. High hardness and high torque. Adapter for converting the socket into a screwdriver bit. 1/4Inch Square Drive to 1/4Inch Hex Adaptor Socket Screwdriver Bits Converter Colour:As Shown Material:chrome vanadium steel Package Contents: 1 * Slotted Extension Driver 1 * Socket Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.