M18 18-Volt Lithium-Ion Brushless Cordless 1/4 in. Impact Driver with 3-Speeds (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. 3 Mode Drive control delivers unmatched control