7Pcs Bearing Steel Metric Screw Thread Plug Tap Set M3 M4 M5 M6 M8 M10 M12

Specifications:  Type Size: (Thread*Pitch) M3: 3mm*0.5mm  M4: 4mm*0.7mm  M5: 5mm*0.8mm  M6: 6mm*1mm  M8: 8mm*1.25 mm  M10: 8mm*1.5 mm  M12: 8mm*1.75 mm  Material: Bearing Steel Instructions: 1. Insert cone part first and make sure the tap center line agrees with drilling center line. 2. Rotate tap wrench with a even force to feed tap, don't need to add force after feed. 3. Reverse rotate about 45 ° each time rotate tap to cut chip in order to avoid blocking. 4. If it is difficult to rotate tap, stop adding force or tap will be broken. Note: the hand tap does not support the machine. Please pay attention when using it.Tap with tap wrench.