The Variable-Speed IBGB-436VS Combination 8" Grinder and 4" x 36" Belt Sander is engineered with industrial-strength construction, sealed bearings, and a powerful enclosed one-horsepower motor meant for heavy usage. The Variable Speed IMBGB-436VS includes a digital readout that allows operators to accurately monitor the RPMS and SFPM. The electric motor brake quickly stops the wheels from 3,600 RPM to 0 in less than 20 seconds.