The 38 Piece Universal QUIK-LOK Drill and Drive Set provides the professional with an answer to their every day needs. The Universal QUIK-LOK is the only system which will "lock in" double ended bits as well as inserts bits and power groove bits. Premium grade S2 tool steel driver bits are engineered and tested to meet the highest standards for high torque applications. The titanium hex shank drill bits withstand heat during high speed use, and the titanium reduces friction which equals longer bit life. This set also includes magnetic nut drivers for use with sheet metal and other hexagonal type screws.