M18 FUEL™ ¼” Impact Driver with ONE-KEY™ is the Fastest, Most Compact, and Most Powerful tool in its class. The POWERSTATE™ Brushless motor produces up to 2,000in-lbs of torque, delivering Up To 30% Faster Driving Speed, increasing the impact drill's productivity for the most demanding fasteners on the job. At only 4.59” in length, this is the Most Compact impact driver in its class, giving you better access in tight spaces.