A Rock Breaker is a machine designed to manipulate large rocks, including reducing large rocks into smaller rocks. They are typically used in the mining industry to remove oversize rocks that are too large or too hard to be reduced in size by a crusher. The Breaker, which may also be known as a hydraulic hammer, or hydraulic breaker, is an attachment designed to break the earth and shatter rocks into smaller, more manageable fragments. The Rock Breaker is made in various places.