What is a Hammer Drill? - wiseGEEK- what is the difference between a hammer drill and an impact drill driver ,The primary difference between this tool and a regular drill is that the hammer drill has a movable chuck, the part of the drill that holds the bit in place. The chuck is capable of moving forward and backward over a very small distance, which helps to "hammer" or "kick" at the wall as the drill spins.Drill buying guide | Tools & Equipment | B &Q5/4/2021· Impact drivers are slightly more compact and lightweight compared to a drill driver. Hammer drill A hammer drill is perfect for those more heavy-duty jobs around the home, from putting up shelves to securing gutters in place.
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