Impact Gun With 2" Anvil and CoverMfr #: 102 4 Twin hammer design twin hammer mechanism delivers smooth and balanced yet hard hitting blows Variable speed trigger variable speed tease trigger gives optimum control of speed Extended anvil 2 inch extended anvil allows use of flip sockets and easier access to deep tire wells Efficient motor premium efficiency air motor uses only 4 CFM of compressed air so you can work longer Peak torque 400 ft lb of available maximum torque