Reversible action impact driver with 1/2″ square drive and equipped with hex chuck. Comes with 6 screwdriver bits: PH2×36mm, PH3×36mm, SL7×36mm, SL8×36mm, PH3×70mm, SL8×70mm Reversible 1/2″ Square Drive Hex chuck for bits Bits made from heat treated CR-V for strength