The Milwaukee M12 FUEL? 1/4" Hex Impact Driver is the Fastest Subcompact Impact Driver, the Most Compact, and provides Maximum Workspace Visibility. The POWERSTATE? Brushless motor delivers the fastest driving speeds in the subcompact class for unmatched productivity. At only 5" long and 7.6" tall (with M12? CP 2.0 Ah battery), this solution is the most overall compact impact driver in class, allowing greater access in tight spaces and overall portability. Tri-LEDs surround the bit accessory with brighter lights and less shadows providing maximum workspace visibility. The Milwaukee REDLINK PLUS? Intelligence delivers top of the line thermal performance allowing more work to be completed. Get all day runtime when paired with our M12? REDLITHIUM? battery pack. Milwaukee's M12 FUEL? Impact Driver is part of the Milwaukee M12? System which is fully compatible with over 125 solutions.