This Ingersoll Rand standard duty air hammer features a longer stroke piston for bolt cutting, exhaust and front end work. CFM at Load: 14, Blows Per Minute (BPM): 2,000, Bore Diameter (in.): 11/16, Air Inlet Size (in. NPT): 1/4, Chisels Included: No, Shank Diameter (in.): 0.401, Case Included: No, Air Consumption (CFM): 3, Stroke Length (in.): 3 1/2, Min. Hose Size (in.): 3/8, Tool Length (in.): 9 29.32