The Ingersoll Rand135MAX Heavy Duty Air Hammer is ideal for vehicle, truck, bus, and heavy machinery repair. Weighing in at 4.5 lbs., the 135MAX HD Air Hammer delivers 2,600 bpm, with a 3” piston stroke. It also has a feather-touch trigger for jobs that require light handling. Featuring a 3/4” (19mm) bore size, the air hammer is available in a convenient kit that includes five chisels and the air hammer in a carrying case or as an individual tool.