This Ingersoll Rand reversible air drill features a lightweight, compact aluminum housing and reversible motor with quick-release lever. Variable-speed trigger for precise speed control. Min. Hose Size (in.): 3/8, Air Inlet Size (in. NPT): 1/4, Air Consumption (CFM): 4, Variable Speed: Yes, Side Handle: No, Speed (RPM): 500, Chuck Size (in.): 1/2, Reversible: Yes, Keyless Chuck: No