Air Digger Hex Shank Size 1 in x 4 1/4 in Piston Bore Size 1 11/16 in Piston Stroke Length 4 in Maximum Blows per Minute 1 850 bpm Retainer Type Latch Air Inlet Size 3/8 in Air Inlet Gender Female Air Consumption 47 cfm Air Inlet Type NPTF Tool Weight 30 lb Application Break Demolition Foundation Work Pipeline and Utility Work Duty Heavy-Duty Features Rubber Buffer Retainers Handle Type D-Handle Minimum Hose Size 1/2 in Primary Material Application Concrete