At only 10 in. long and 3.9 lbs, this tool provides performance and run time that is similar to a much larger tool, at a fraction of the size and weight. Milwaukee has combined their exclusive POWERSTATE brushless motor, REDLITHIUM battery pack, and REDLINK PLUS intelligence to deliver a 12V Rotary Hammer that rivals compact 18V tools on the market today. The M12 FUEL 5/8 in. SDS Plus Rotary Hammer Kit provides up to 2 times more run-time, up to 75 percent more speed and has the largest SDS Plus bit capacity in its class. The Electro Pneumatic Design allows for drilling of up to 5/8 in. holes in concrete and masonry. For maximum versatility, regardless of application or orientation, the tool also features 2-Mode Operation, Rotary Hammer and Hammer-only.