Most controllable CP Hammer available. Ideal for complete body shop work . Positive action trigger for precise control over speed range. Versatile-handles widest range of applications. Good for front end, exhaust, frame, body work, etc. Shank size, .401", bore: 9/16", stroke: 3.13", 2000 blows per minute, average air consumption: 2.13 cfm, air inlet thread: 1/4" NPTF, minimum hose size: 3/8", sound dBA: 91. Hammer weighs just 3.33 lbs.