Excellent for small line cleaning., the RIDGID K-39 Sink Machine opens clogged lavatory, sink lines, urinals, and tub/shower drains. It is available in 2 styles: Manual & AUTOFEED; lightweight, easy-to-use, no set up required; its variable speed power unit rotates cable 0-450 RPM’s. It features two piece twist lock canister with interchangeable inner drum, drum capacity: 50′ of 5/16″ (15m/8mm) or 35′ of 3/8″ (11m/10mm), approved CSA.