Air Rock Drill, Weight Class 30 lb, Shank Size 7/8 in x 4 1/4 in, Maximum Blows per Minute 2,700 bpm, Piston Bore Size 2 3/8 in, Piston Stroke Length 1 7/16 in, Retainer Type Latch, Vibration Reducing Handles No, Sound Reducing Muffler Yes, Air Inlet Gender Male, Air Inlet Size 3/4 in, Air Inlet Type NPT, Air Consumption 73 cfm, For Use On Concrete, Handle Type T-Handle, Hex Shank Size 7/8 in x 4 1/4 in, Hole Depth 10 ft, Hole Diameter 1 1/2 in, Kit Contents (1) Bare Tool WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -