The RIDGID C-75HC (47427) 3/4 in. x 75 ft. Hollow Core Cable is ideal for cleaning 4" to 10" drain lines, including laterals and main lines. The powerful cable can be used for heavy-duty blockages such as tree roots. The hollow core cable furthermore is light in weight and provides maximum flexibility, helping operators to negotiate severe bends and traps in large lines. The cable is suitable for use with K-750, K-7500, and K-750R Drum Machines.