Steelman Belt Sander includes a 3/4" (20mm) 120-grit sanding belt measuring 20-1/2"-long, with an operating speed of 16,000 RPM. This air-powered tool features 360 head rotation and a rear exhaust feature that directs air away from work areas. This product also features a built-in regulator and 1/4" air inlet (for 3/8" hose), running on 90 PSI of air pressure, with an air consumption of 18.4 CFM, and measuring 18-1/2" in overall length.