1" DR. Impact Wrench 1" DR. impact wrench Nickel chrome molybdenum square drive Variable speed trigger Muffled on handle exhaust 8" extension anvil General specification Std. Bolt Size : 1-25/32" inch / M45 Overall Length : 24-7/8" inch (632 mm) Air hose : 3/4" ID Air pressure : 90 PSI (6.2 bar) Avg. Air Consumption : 411L/min 14.5 CFM Sound : 101.91DBA