Powerful hammer drill for heavy duty work. Advanced brushless motor technology for more power and higher torque. 4-in-1 multi-function for drill, hammer, hammer drill and chisel modes. SDS plus chuck for tool-free, quick and easy changing of drill bits. Anti-vibration auxiliary handle reduces vibration, providing increased comfort and control. Adjustable depth stop ruler for precise drilling depth. Part of the Erbauer EXT and EXT EliteCell, one battery system, running multiple tools for increased flexibility. Compatible with all Erbauer 18V EXT and EXT EliteCell batteries and chargers.