Lang 48pc Tap Die File Rethreading Set Metric NF-SAE NC-USS Thread Restore 971
Great USA Made rethreading set perfect for many jobs! Thread Files - US Thread Pitch: 11, 12, 13, 14, 16, 18, 20, 24. - National Coarse: 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13, 9/16-12, 5/8-11.