Hydraulic paving breakers use their heft and power to demolish concrete and other hard materials. Also known as hydraulic jack hammers, they are held vertically to focus their weight downward and drive their chisel into floors, sidewalks, curbs, and roads. These hydraulic tools deliver smoother performance and higher force than their air- or electric-powered counterparts. They are self-lubricating to provide a long lifespan and minimize maintenance.