Who can do this? Put the drill into it
The method of assembling drill bits is incorrect. The easiest way is to clamp the hammer hammer down the legs, with the left index finger on four set head forward, pointing to the direction of the motor to pull the thumb and ring sleeve. Take the drill with your right hand
Change the hammer and steel ball to the service point. 3, time does not need, may not plug in, according to 1 of the method of force a few times just fine
