.For removal of broken screws and studs
.Made from carbon steel with square drive ends. Left hand threaded for extracting broken studs and screws.
.In plastic case

.Consist of:
NO1. 1/8-1/4 3-6mm
NO2. 1/4-5/16 6-8mm
NO3. 5/16-7/16 8-11mm
NO4. 7/1