Helicoil master SAE fine thread repair set # 4936. The set is complete and unused with the exception of the 17/64" drill bit. The case shows light wear from storage and moving it around. The inserts are: 12 each 10-32, 1/4-28, 5/16-24, 3/8-24, 6 each 7/16-20, and 1/2-20.
