3/4" DR. Composite Impact Wrench 3/4" DR. composite impact wrench Lighter weight durable composite housing Nickel chrome molybenum square drive Comfortable rubber handle General specification Std. Bolt Size : 1-3/16" inch / M30 Air hose : 3/4" ID Avg. Air Consumption : 241L/min 8.5 CFM Sound : 105.0DBA Vib : 15.40 m/s²