... : 11, 12, 13, 14,16, 18, 20, and 24 threads per inch #3 Thread file pitches:9, 10, 12, ... 16, 20, 27, 28, and 32 threads per inch Taps: 1/4" - 9/16" popular sizes ... (course and fine); 6-14mm popular sizes pitches Dies: 1/ ... of Auto repair tools with well-equipped testing equipment and strong technical force. With a wide range, good ...