... .5, and 3mm Thread Restoring File, Tap, and Die Kit#2 Thread file pitches: 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 ... will be protected strictly.3.Well trianed and with experienced staffs to answer the questions.4.After ... of Auto repair tools with well-equipped testing equipment and strong technical force. With a wide range, good ...