This Ingersoll Rand air hammer features an alloyed steel barrel and heat-treated piston for longer life. Stroke Length (in.): 1 5/8, Bore Diameter (in.): 3/4, Tool Length (in.): 6 1/8, Air Inlet Size (in. NPT): 1/4, Min. Hose Size (in.): 3/8, Chisels Included: No, Case Included: No, CFM at Load: 14, Shank Diameter (in.): 0.401, Blows Per Minute (BPM): 5,000, Air Consumption (CFM): 2