This Mac Tools set includes a 5/16 inch SAE 3/8 inch HEX socket driver and 842 MAC 1/4 bit driver. The set is perfect for automotive repairs and is made in the United States with a chrome surface finish. The tools are specialized for Torx drive type and can be used with standard socket types. The set consists of a single item and includes two pieces. The manufacturer part number is X106D 842.