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.