I bought this set as a portable hex set and have used it over a dozen times already. Good quality and great case. The last car I worked on was a VW with triple square head bolts for the CV axle and these bits saved my bacon! Worth every penny
Pros
MUSTANG premium tools exceed ANSI standard, manufactured from S2 steel, precision ground, heat treated, hardened to 58~60HRC and tempered for increased strength and maximum torque.