Dynastraight Air-Powered Abrasive Finishing Tool for graining, cleaning and polishing on stainless steel, aluminum, carbon steel and composites. 4,500 RPM, .7 hp. Model includes 13016 Arbor for up to 2" wide x 1/2" I.D. wheels. Accessories with 1/2" dia. bore (maximum speed of 4,500 RPM) may be mounted.