1/2 Inch Drive impact driver set with reversible action. The driver is designed with a 1/2 Inch Drive square drive but it is also equipped with a chuck in which 5/16 Inch hex bits can be fitted. The set comes complete with 12 screwdriver bits for slotted heads, Phillips heads and internal hex screw heads and is supplied in a handy storage case. Accessories 1/2” drive Industrial quality reversible impact driver, Impact coupler adaptor Impact bits 5/16” hex : 8x36mm flat, 10x36mm flat, PH2, PH3 p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 6.0px Helvetica} p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 6.0px Helvetica}