DEWALT DCF885M2 20V MAX Lithium Ion 1/4-Inch Impact Driver Kit 20 Volt, 4.0 AH, XR Li-Ion batteries with fuel gauge provide 33% more capacity High performance (0-2,800 RPM), (0-3,200 IPM) with a max torque of 117 Ft-Lbs 1/4-Inch quick release hex chuck LED light with 20 second trigger release delay