1/2" Sq Drive Chrome Molybdenum steel bit holder with Chrome Vanadium steel S2 bits. Phosphate finish for corrosion resistance. Suitable for use with any impact tool. Contents: 1/2" Sq Drive Bit Holder, Bits; 6, 7, 8, 10, 12, 14, 17, 19mm. Supplied in storage tray. Model No. AK5609