This Ingersoll rand air hammer provides economical, fast cutting action, especially for medium exhaust work panel cutting and general repair work. Delivers up to 3500 blows per minute. Includes 5-pc. chisel set. Stroke Length (in.): 2 5/8, Case Included: No, Min. Hose Size (in.): 3/8, Shank Diameter (in.): 0.401, Chisels Included: Yes, CFM at Load: 15, Blows Per Minute (BPM): 3,500, Air Inlet Size (in. NPT): 1/4