The Capri Tools Extreme Series 1/4 in. 1 HP Air Die Grinder gives you the power to master heavy duty applications and to get the job done efficiently. Power 1 HP motor easily handles even the toughest jobs. Built-in air regulator adds true versatility, letting you fine tune the tool easily and accurately while you work. With our specially tuned mufflers, the grinder operates super quietly at only 78 dBA. Ultra-low vibration at only 0.45 m/s2 reduces fatigue over long periods of use. The ergonomic contour cushioned grip is comfortable to hold. The smooth trigger mechanism enhances control. Rear exhaust with 360-degree swivel lets you vent the exhaust in any direction you like. It requires low air consumption only 4.1 CFM at 90 PSI and weighs only 1.45 lbs. Comes with 1/4 in. NPT air inlet.