DynaLocke is truly two-tools-in-one, easily changing from a rotary Disc Sander to Random Orbital Sander with the flip of a switch Switch is recessed within tool grip to prevent accidental engaging Utilized for leveling glue seams on Corian and other solid surfaces Includes low profile, premium urethane, hook-face sanding pad 3/16" orbit for general sanding Tool Spindle Thread: 5/16" – 24 Female Horsepower: .45 RPM: 12,000 Max Air Flow @ 90PSIG: 23 Air Hose Connection Size: 1/4" Rear Exhaust Weight: 2.86 lb Dimensions: 11-1/6" L, 5-1/8" H