Porter Cable, 20V, Max, Lithium-Ion, 1/2" Impact Wrench, Up To 700 FT/LB Maximum Torque & 1200 FT/LB Max Breakaway Torque, Multi-Speed Control For A Variety Of Applications 0-400/1,200/1,900 RPM, 1/2" Anvil With Detent Pin, LED Light With 20 Second Delay For Increased Visibility.