STANLEY® has a long history of leadership in the handheld hydraulic percussion tool category. When you need a reliable handheld percussion hammer, our hydraulic breakers are simply the best choice. The impact force of STANLEY® hydraulic handheld breakers is unparalleled, and they outperform pneumatic breakers in every metric compared, including power-to-weight, blow energy, and noise. Our portable breakers in the 70-pound weight class produce an impact energy that is comparable to that of most pneumatic breakers in the 90-pound weight range. We also provide chipping hammers for light and medium-duty chipping, ground rod drivers, and underwater models of our breakers and chipping hammers.