14PCS 150mm Extra Deep Nut Driver 1/4" Hex Shank Wrench Socket Screw Driver Bit Inner Diameter:6/7/8/9/10/11/12/13/14/15/16/17/18/19mm Features: High temperature quenching, heat treatment hardened.It is suitable for use on tools such as pneumatic air drills and ordinary hand drills. It is mainly used to install and remove hexagon head screws and hexagon head nuts. It is convenient and quick to use and is a high-quality choice for DIY, auto repair industry, building decoration and other professionals. Packing Included:14PCS


