AmPro 150mm Dual Action Sander

balanced ball-bearing construction for vibration-free performanceautomatic release throttle lever with positive actionbuilt-in regulator for positive speed controlworks with pressure sensitive adhesive back sandpaperspindle/thread size : 5/16"-24free speed (rpm) : 10,000avg. air consumption (cfm) : 6.5air pressure (psi) : 90air inlet (npt) : 1/4"hose size (id) : 3/8"