- Square Drive: 3/4" - Bolt capacity: 5/8" (16mm) - Maximum torque: 425ft-lb (576n-m) - Working pressure: 90 PSI - Air consumption: 10 CFM - Air inlet: 1/4" NPT - Min. hose size: 3/8" - Overall length: 8" (203cm) - Heavy duty rocking dog hammer mechanism