.401 Shank Long Barrel Air Hammer | JETFor maximum performance we recommend 90 PSI air pressure.Long barrel design for more hammering powerAccepts popular .401 taper shank chiselsStandard quick change spring safety retainerPolished aluminum one-piece housing and handle with hardened steel barrel and piston for long lifeBuilt-in steel air regulatorIdeal for air hammering applications which require increased powerStandard Accessory: Standard spring retainer (905146)Optional Accessory: Quick coupler retainer (408291)Air Inlet (NPT): 1/4" Average Air Consumption: 4.2 cfm Blows per Minute: 2000 Min. Hose Size (ID): 3/8" Overall Length: 10-1/4" Piston Diameter: 3/4" Piston Stroke: 3-1/2" Product Weight: 4.4 lb (1.98 kg) Sound Pressure: 98.7 dBA Vibration: 14.5 m/s²