Visit the BND Abrasives & Tapes Ltd website for more information on Dynabrade X51VHS 5″ (127 mm) Dia. Central-Vacuum Dynorbital® Extreme Random Orbital Sander 0.3 hp, 12,000 RPM, 3/16″ (5 mm) Dia. Orbit, Rear Exhaust, Hook-Face w/Regulator