RIDGID’s new Auto-Clean drain cleaning machine works pipes from 3/4 inch to 1 1/2 inches in diameter and is designed to clean sink, utility sink, tub and shower drains. AUTOFEED technology advances and retrieves the drain-cleaning cable with the push of a lever. Aluminum paddles allow cable to be fed down a drain at 18 feet per minute. A guide hose eliminates the need to touch the actual cable.