The Hyundai 3/8-Inch Reversible Air Drill is made of lightweight die-cast aluminum and has a keyed chuck for secure bit use. The ergonomic design is designed for increased comfort. It is perfect for home and auto maintenance. Forward and reverse action reduces the chances of tools binding. Free speed is 1800 RPM, average air consumption is 3.7 CFM, operating pressure is 90 PSI and the sound power level is 98.1 decibels.