electric hammer drill
2021 05/12
The hammer drill is a hand-held power tool that combines the functions of "impact drill" and "electric hammer". The main impact drill is rotary cutting. Reciprocating hammering movement perpendicular to the rotating face of the drill bit. The electric hammer uses the movement of the piston to compress the gas to impact the drill bit. Without much effort, you can open holes in hard materials such as concrete, brick, and stone.