Use to sand body putty and filler in auto refinishing and fiberglass work. Dual action for swirl free finishes. Works with any adhesive backed paper (6" pad diameter). Built in regulator allows for speed control. Rubber grip for increased comfort. 1/4" NPT (National Pipe Thread) air inlet. Delivers 10,000 RPM (revolutions per minute). Requires 10.0 SCFM (standard cubic feet per minute) at 90 psi (pounds per square inch). 5 HP (horsepower) minimum horsepower required to operate for intermittent use. 1 year limited warranty.