The milwaukee c12 pd compact percussion drill also known as a combi hammer drill is a versatile tool with 3 modes for a number of applications1 screwdriver mode2 drill mode for wood and metal drilling3 hammer drill mode for masonry and concrete drilling the c12 pd has a 10mm single sleeve chuck enabling quick change of a complete range of accessories 18 stage torque adjustment allows a wider range of applications and flexibility redlink overload electronics in both the tool and the battery pac