Chicago Pneumatic Air Drill 3/8in, 2400 RPM, 4 CFM, Model# CP785.Chuck Size: 3/8 in.Keyless Chuck: No .Air Consumption: 4 CFM.Speed: 2,400 rpm.Air Inlet Size: 1/4 in.Min. Hose Size: 3/8 in.Variable Speed: Yes .Reversible: No .Side Handle: 2 1/4 .Tool Weight: 7 lbs.Versatile drill for a variety of automotive service and body shop applications.Triple Idler Planetary Gearing for smooth operation and long life.Rugged 1/2 HP motor.Handle exhaust directs air away from operator.Ergonomically designed handle for operator comfort.