The DeWalt DC925K is an 18V Hammer Drill/Driver Tool Only with Case. It has a powerful 18V combination tool for heavy-duty hammerdrilling and screwdriving applications. There are three speed settings for optimum performance in high torque, normal use and high speed applications. In addition, the 22-position adjustable torque control allows for uniform results and optimized precision when screwdriving. You get superior bit-gripping strength with the 13 mm self-tightening chuck, which tightens throughout operation. You also get better control of the tool because of an electronic brake and the modular design,w hich gives you easy access to key components and serviceability. The high-performance fan-cooled motor is built for maximum power and durability with replaceable brushes. An all-around great tool with all the features youll need to get the job done right.