The CTA Manufacturing 5-pc Mortorq Super Socket Set, No. 8140, offers five bits with an asymmetrical geometry that provides enhanced installation of Mortorq Super fasteners. The bits can also be used for removal. Fasteners are found on many GM models used in a variety of applications including bell housings, interior components, door frames, body components, brake rotors and more. These fasteners are also found on 2015 Chrysler seat mounts and other Chrysler applications. The set includes 3/8" square drive bits in sizes M0, M1, M2, M3 and M4. The bits come packed on socket rail. Individual sockets are available separately.