$54.99 DEWALT Cordless, Impact Driver, 1/4 in Hex, 20V DC, 1,825 in-lb Max. Torque - 54DD16|DCF888P2BT 
Milwaukee M18 18-Volt 1/4 in. Cordless Hex Brushless Impact Driver Kit (Tool-Only)-2750-20 - The 
Rockwell 20-Volt Lithium-Ion 1/4 in. Hex Cordless Brushless Impact Driver-RK2868K2 - The Home Depot
