Ralli Wolf rotary hammers is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning. Compared to less advanced power units known as hammer drills, rotary hammers tend to be larger and provide a bigger impact force by utilizing a technology. The flying piston is at the other end of the same cylinder. For additional information regarding the product, please contact with dubuy support team.