This teng tools impact driver set contains a 12inch drive impact driver a coupler adaptor 516 inch hex to 38in male hex adaptor and 17 bits supplied in a case with a removable hinged click lock lid for use as an individual set or as part of teng tools tool storage systems dimensions 265 x 142 x 50 mm contents 1 x 12 inch drive reversible impact driver1 x 12inch drive coupler adaptor1 x 516 inch hex to 38in male adaptor4 x 516 inch drive slotted 36mm hex bits 6mm 8mm 10mm and 12mm4 x 516 inch dri