Helicoil 5521-4 1/4-20 Inch Coarse Thread Repair Kit

Heli-Coil has complete coverage of Inch thread repair sizes. Available from stock are Inch Coarse kits in sizes 8 through 1-1/2 Inch and Inch Fine kits in sizes 10 through 1-1/2 Inch. Kits up to 3/4 Inch are packaged in durable placon or vinyl pouches, and kits 7/8 Inch and larger are packaged in sturdy metal cases and contain the proper size high speed steel drill. All kits contain a Heli-Coil tap, installation tool, a quantity of inserts and detailed instructions.