- Jun 12, 2018 -
Under normal circumstances, the hammer drill and impact electric drill usd the same way to replace the drill bit, but the drill chuck is separated from the self-tight drill chuck and the hand grip drill chuck. When replacing the drill with a self tightening drill chuck, we need to hold the drill chuck in one hand and move the reverse switch of the drill, so that the original bit would be easily replaced. And use the same method to get the bit up. But please make it sure that you do not forget the back and force of the switch. If it is a hand held drill chuck, it can be replaced simply by opening the key of the drill chuck.