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. MILWAUKEE REDLINK PLUS Intelligence delivers top of the line thermal performance allowing more work to be completed. Get all day runtime when paired with the MILWAUKEE M12 REDLITHIUM battery pack. The MILWAUKEE M12 XC High Capacity REDLITHIUM Battery is designed with superior pack construction, electronics, and performance to optimize work per charge and work over pack life. It offers 4.0 Amp hours of runtime. With built-in Milwaukee durability, this battery runs cooler and performs in climates below 0°F/-18°C. Managed by Milwaukee's exclusive REDLINK Intelligence, the battery features overload protection to prevent users from damaging their cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. The temperature management system and individual cell monitoring help maximize battery life.