Restores damaged threads on bolts and shafts. These files are the highest quality with cross-cut and depth proportional to the thread pitch , so file will not skip or jump out of fine pitches . Each model offers eight pitches. All are 7/16'' square x 8-3/8'' long .
Type: Metric.
Pitch Sizes: 0.75, 1.00, 1.25, 1.5, 1.75, 2.00, 2.50 and 3.00mm.