A hammer drill contains a hammer clutch or a hammer-like mechanism which provides a circular rotation and a forward driving force. A hammer drill is capable of performing heavy-duty tasks, but it can also be used as a regular power drill.
An impact drill uses an anvil to provide increased torque and spin the bit with more power. It is often used in everyday home improvement projects as it takes less effort to drive long screws into the material and minimises the danger of stripping.
A long cable ensures more freedom of movement.
Higher speeds work better for drilling holes in certain types of material, such as steel, aluminium, concrete, etc. The drill speed is measured in rotations per minute (rpm) when the drill has no-load.
The hammering action provides short, rapid hammer thrusts which make drilling faster and easier. The hammering action is measured in blows/beats per minute (bpm) when the drill has no-load.
A drill with variable speed allows you to switch between low and high speeds, giving you the possibility to take on a wider range of tasks.
The amperage is the strength of an electric current and it is measured in amperes (amps).