Delta 23-197 8″ variable speed grinder features: variable speed control offering you convenience and versatility in your grinding, sharpening, buffing and polishing operations upfront variable speed dial allows you to easily control speeds from 2,000 rpm to 3,400 rpm for a fine level of control depending on the materials you are working with features a 5 amp induction-type motor for powerful performance incorporates two different grits for sharpening and grinding full sized, adjustable safety shields. Goose neck style lamp with own switch cast iron base for stability and low vibration