Eagle® 4005 Needle Scaler, Pneumatic, Industrial Duty, Air Consumption: 12 cfm, Blows Per Minute: 4600, Air Inlet Size: 1/4 Inch, Minimum Hose Size: 3/8 Inch, Needle Diameter: 3 mm, Sound Level dBa: 93, Stroke Length: 1.5 Inch, Vibration Level: 10.2 m/sq. sec, 18 Inch Length, Includes: 28 Piece 3 mm Needle Set, Weight: 6.2 lb