The RIDGID C-46 (55467) 1/2 in. x 90 ft. Inner Core Cable is ideal for cleaning 2" to 4" drain lines, including laundry stacks, roof vents, and indoor floor drains. Its inner core design provides good exceptional flexibility, toughness, and kink resistance. As torque builds, the outer spring tightens on the wire core, causing the cable to stiffen and transfer greater torque to the cutter. The cable is suitable for use with the K-3800 Drum Machine.