M18 18-Volt Lithium-Ion Brushless Cordless 1/4 in. Impact Driver (Tool Only)The M18 Brushless Cordless Compact 1 4 in. Hex Impact Driver is the industry's fastest 18 Volt compact impact solution. REDLINK electronics and REDLITHIUM batteries deliver 3,200 RPMs for best in class application speed. Brushless motor technology provides 1,600 in. lbs. of torque, more runtime and a more compact tool at 5. 1, which means less trips to the charger and greater access in tight spaces. Fastest application speed 1,600 in. lbs. of torque