Beginner DIY users
1. Please drill a prepared hole by using a drill bit on the working material.
2. Please chamfer edges with taper reamer etc.
3. Please press against processing material directly by tapping after setting on hex shank bit insertion part of Impact driver (forward-reverse rotation)
4. Please do screwing work while applying cutting oil to the work material and rotating the impact screwdriver slowly.
5. Please rotate electric drill slowly and remove the tap, when you have finished threading