Chicago Pneumatic BK-1 Chipping Hammer sold with steel air inlet bushing.  Versatile hammer for chipping, breaking, scaling, etc very heavily built.  Uses .680 round shank chisels, points, etc. Tool features the CP Boyer Valve design for precise control of speed and power.  The tool barrel is grooved for an optional retainer (recommended) of your choice, which may be ordered from us.   If used without a chisel retainer, please be aware of and use safety guidelines.  Tool Weight approx 13 lbs, Length 12.5".  Note: Barrel Serial No's may vary from picture.