Pitches include: SAE Rethread Files (Threads per inch): 9; 10;11; 12; 13; 14; 16; 18; 20; 24; 27; 28 and 32; Metric Rethread File (Millimeters per thread): 0.75; 1.00; 1.25; 1.50; 1.75; 2.00; 2.50; 3.00. Thread restorer files are used to help restore external threads. Just select the right threads per inch or millimeters by using regular file strokes.
