Capable of running three different size cables: 5/16", 3/8", and 5/8". The perfect, all-around sink, shower, and floor drain machine. Unique, easy-to-use, instant-acting cable clutch maximizes operator control. Pull handle down and cable spins at 400 RPM. Release handle, cable stops - instantly. Uses sections of 5/8" cable, cleans 1 1/4" to 4" lines up to 100 feet. C-8 best for 1 1/4-3" drains. - C-9 best for 2-4" drains. Equipped with an A-17 adapter, runs up to 50 feet of 5/16" or 35 feet of 3/8" continuous length cable. 5/16" best for 3/4" to 1 1/2" lines.