CP’s most powerful, 1/2" impact wrench - 625 ft.-lb. Oil bath "Spring Hammer" clutch mechanism for ultimate power, high durability and reduced vibration Differential regulator with four positive power settings in forward and ultimate power in reverse 2" extended anvil for tire work Applications: high volume tire shops Ultimate torque: 625 ft.-lbs. Square drive: 1/2" Std. bolt size: 5/8" - 16mmThis is CP"s most powerful, 1/2" impact wrench - 625 ft.-lb. Oil bath "Spring Hammer" clutch mechanism for ultimate power, high durability and reduced vibration. Differential regulator with four positive power settings in forward and ultimate power in reverse 2" extended anvil for tire work