AVID POWER Cordless Impact Wrench, 1/2 Impact Gun w/Max Torque 330 ft lbs (450N.m), Power Impact Wrenches w/ 3.0A Li-ion Battery, 4 Pcs Impact Sockets and 1 Hour Fast Charger, 20V Impact
Milwaukee 2767-21B M18 FUEL 18-Volt Lithium-Ion Brushless Cordless 1/2 in. Impact Wrench with One XC5.0 Ah Battery, M18/M12 Multi-Voltage Charger and Contractor Bag - Amazon.com