Elikliv Cordless Impact Wrench 1/2 inch, 500Ft-lbs Max Torque(650N.m), 21V 3000 RPM Brushless Power Impact Gun, 4.0Ah Li-ion Battery with Fast Charger, Electric Impact Driver for Car Truck Tires Home - Amazon.com
Kobalt 500-ft lb Air Impact Wrench at Lowes.com
Stark 500 ft./lbs. 1/2 in. Mighty Air Impact Wrench 44421 - The Home Depot
3/4" Dr 120 - 500 Ft Lbs TorcUP VOLTA Cordless Torque Wrench (Gun Only)- VT-
Impact Wrench 1/2" Dr. 500Ft/Lbs 7000RPM - Walmart.com