The Milwaukee M12 Brushless Twin Pack comes with a high performance sub compact percussion drill measures 190 mm in length making it ideal for working within confined spaces, it has a 10mm metal chuck for quick bit changes and bit retention. Its on-board fuel gauge and LED light provides added user convenience and illumination in low lit working conditions. The twin pack also comes with a high performance sub compact impact driver, measuring 165mm in length. It has a 1/4" hex chuck for quick and easy bit change. In the twin pack there is also 2 high quality lithium ion batteries & charger. The REDLITHIUM battery pack provides superior pack construction, electronics and fade-free performance to deliver more run time and more work over pack life. Features and Benefits On board fuel gauge and LED light - added user convenience and illumination in low lit working conditions High performance sub compact impact driver measures 165mm in length making it ideal for working within confined sp