Milwaukee M12 12V Lithium-Ion Cordless 1/4 in. Hex Impact (Tool-Only) 2462-20 - The Home Depot
Milwaukee M18 FUEL 18-Volt Li-Ion Brushless Cordless 1/4 in. Hex Impact Driver & 3/8 in. Compact Impact Wrench with Friction Ring 2953-20-2854-20 - The Home Depot