Ready to drill holes in the wall. Hammer is a button to not know what
The utility model is a functional key used for regulating impact or making an ordinary electric drill
Two modes: rotary and rotary type, with rotary drill holes in the wall (drill type), the other is not available (rotary hammer type).
This kind of hammer above switch function: can choose to drill or hammer type, will press the red button clockwise or counterclockwise rotation in place to let go, to protect the lock button.
