Bosch Power Tools deliver stronger performance and lasting reliability. The new Bosch 12 V Max hammer drill driver features a 3/8 In. auto chuck for convenient clamping of drills and bits and 20 clutch settings for perfect torque adjustment for precise screw driving. It also has a built in LED light. This will illuminates dark work spaces and fuel gauge for easier battery management for continued working. 12V Max battery provides optimum runtime.