Bench Sand Rammer Hole Diameter 2 1/2 in Piston Bore Size 1 in Piston Stroke Length 2 1/2 in Maximum Blows per Minute 870 bpm Butt Diameter 2 1/2 in Tool Weight 12 lb Air Inlet Gender Female Air Inlet Size NPT Air Consumption 14 cfm Air Inlet Type 1/4 in NPT Female Duty Heavy Handle Type Straight Minimum Hose Size 3/8 in Product Type Sand Rammer Retainer Type Latch Sand Rammer Style Benchtop Series 130A1M Series Sound Level 82.2 dBA Standards ISO 15744 ISO 28927