8pcs Tap and Die Set Metric Wrench Cut M3-M12 Hand Threading Tool Tungsten Carbide Tap Die Screw Thread Making Tool Bit Set  Feature:
1. It is suitable for manual percussion wrench to clamp percussion reamer to cut internal thread hole.
2. Convenient and practical, wide range of applications.
3. The utility model relates to a tapping wrench, which is suitable for various tapping. The structure of difficult to machine parts greatly improves the efficiency.
4. The handle is fully adjustable to accommodate any metric tap from M3 to M12.
Specification:  Material:  metal Package size: 260 * 95mm/10.23*3.74'' 7 taps, 1 Tap Winch: M3-M12 Metric Size: M3*0.5/M4*0.7/M5*0.8/M6*1.0/M8*1.25/M10*1.5/M12*1.75 heavy duty high quality