Features and Benefits: * Smooths and contours inside or outside corners at 4,500 ft./min. * The 3/8-inch x 13-inch belt rotates 360 degrees * 360 degree rotation allows for sanding of normally inaccessible working areas such as internal surfaces and narrow corners Specifications: pad size: 3/8-inch x 13-inch; free speed: 18,000 RPM; overall length: 11-1/2-inch; net weight: 1-1/3 pounds.; air inlet thread: 1/4-inch NPT; air hose ID size: 3/8-inch; average air consumption: 7 cfm; air pressure: 90-120 PSI.