Completely Rebuilt Pneumatic Drill / Boring Unit by Ingersoll Rand Model: IR-22KWA1 RPM: 725 Weight: 14 1/2 Lb Overall Length: 17 1/4" Capacity as Drill: 9/16" Capacity as Ream: 7/16" Capacity as Tap: 7/16" Length of Feed: 2 3/8" Air Inlet: 3/8". Recommended Hose Size: 1/2" Side to Center of Spindle: 1 7/16". Standard Spindle: Stub Taper Threaded.