Air drill, 3/8 inch heavy duty with its industrial grade 3/8 inch chuck, this economical choice includes high-quality features for general drilling and hole sawing jobs. The planetary gear reduction balances the load on bearings and gears for increased tool life. Variable speed throttle. Lightweight, compact drill. Handles smoothly. Performance rating: heavy duty free speed: 2,500 chuck size: 3/8 inch rated power: .5 horse power weight: 2.4 pounds overall length: 7.8 inches average air consumption: 4 at load: 20 sound dba: 90.1 air inlet nptf: 1/4 inch minimum hose size: 3/8 inch