Rotary/Combination Hammers are perfect for drilling holes in hard materials, such as concrete, brick, and stone. They are the heavy-duty version of a hammer drill, with more power than a standard hammer drill. They have more power when drilling and can drill bigger holes. They can also have an option to turn off the rotary action and only have a hammer action which is used with can be used with a variety of chisel bits, useful for demolition purposes, for concrete, masonry, and tiles.
They feature different grip styles, a pistol grip, and D-handle. A pistol grip, is an open handle attached to the underside of the drill with a trigger for single finger operation. A D-handle, is an enclosed handle attached to the back of the drill usually with a larger trigger that can be pressed with more than one finger to reduce operator fatigue
They often have a secondary handle to allow the operator to use both hands to operate the tool. This reduces the chance of injury to the operator, as most hammer drills have a large amount of torque which could twist the tool out of the hands of the user if the drill bit jams in the hole. If that happens, the operator could sprain their wrist or be hit by the tool handle when the tool spins, most commonly in the wrist/ hands or in the face/ jaw.