Internal Thread Restorers

These two tools greatly simplify internal thread repairs in mild steel, cast iron, etc. The hardened HSS cutters automatically conform to the original thread pattern, so you don't need to know the exact size and pitch. They chase all standard (60°) threads, including metric sizes, in either direction, reshaping damaged areas and removing dirt, rust or paint.

Only 3-1/2" long, they fit easily into a toolbox. The small size adjusts from 5/32" to 5/16" (4mm to 8mm) to reach up to 3/8" deep; the large fits 5/16" to 1/2" (8mm to 12mm) and has a 5/8" reach. Each tool includes two plastic sleeves to prevent the tip from deforming aluminum or other soft metals.

Patented.