- Length 8-1/2" x 7/16", (213mm x 12mm).
- These indispensable files restore damaged external threads on studs, bolts, screws, plumbing pipe and pipe fittings.
- Three different high carbon steel files are available. Each file provides 4 to 8 different thread pitches.
- Restores rusted or corroded fasteners.
- Doubles as a screw pitch gage.
