An expansion screw with a diameter of 20. How much impact bit do you need to use?
An expansion screw with a diameter of 20 requires an impact drill with a diameter of 26mm.
The table above is the reference value of the match;2, the specific adaptation, also need to be flexible according to the actual situation, if the fixed place expansion screw is loose, need to be reduced if the fixed impact drill specifications; expansion screws tight place, according to the above table match.
