Hardened steel pinion with brass drive gear reduces vibration. Precision-balanced sanding pad produces finer finish. Powerful 1 hp motor maintains speed under the heaviest cutting conditions. Rotating dust pipe swivels 210 degrees to allow access to tight spaces and easily attaches to 1 1/2" or 2" vacuum hoses for improved dust containment. Quick release dust bag that slides on and off with a simple twist and pull. Transparent molded plug has an internal light that serves as a power indicator.