The Zipp Air 3/4" Twin Hammer Mini Impact Wrench, No. ZIW6511, has three adjustable stages of speed for forward and reverse operation. Providing 1,100 ft/lbs of torque, this impact is suited for both automotive and heavy truck applications. The ZIW6511 has a twin-hammer design and a hot forged alloy steel hammer cage and anvil to create more torque and and provide longer life. The 5.8-lb tool offers 7,200 rpm of free speed, an operating air pressure of 90 psi and an average air consumption of 8.12 cfm.