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. Our M12 REDLITHIUM HIGH OUTPUT XC5.0 delivers 25% more power and runs 25% cooler vs our other M12 REDLITHIUM XC battery packs. The increase in power elevates the performance of the entire M12 system and drives the next breakthrough in M12 FUEL. The lithium-ion battery delivers fade-free power and runs substantially cooler through demanding applications, allowing you to push your cordless power tools throughout a wide range of applications. Each battery pack is durably built for heavy-duty use, runs cooler and performs in climates below 0F/-18C. In addition, the M12 REDLITHIUM HIGH OUTPUT XC5.0 is built with a resistant housing, providing increased protection against exposure to common oils, greases, and solvents found in automotive and manufacturing environments.