The Zipp Air Tool 5" Air Angle Grinder, No. ZAG5110BC, is made with aluminum alloy housing, which provides durability yet is lightweight.The grinder has spiral bevel gearing in the angle head for extended life and smooth, low vibrations. A removable side handle is included for increased maneuverability. The tool has a free speed of 10,900 rpm, has an average air consumption of 12.7 cfm and a minimum hose size of 3/8". The grinder is 9-11/16" long, weighs 3.08 lbs and has a 1/4" air inlet.