The milwaukee m12 bd driver has a sub compact design with a high performance motor that measures only 175mm in length making it ideal for working within confined spaces has a 14in hex chuck for quick easy one handed bit change the handle has been optimised for better control and improved grip also has an on board fuel gauge and led light for added user convenience and illumination in low lit working conditions redlithium ion battery pack delivers twice the run time up to 20 more power twice the