The RIDGID® T217 4-inch Drop Head Auger is a useful addition to your drain cleaning machine because it rides down into a clogged pipe to cut through an obstruction. It can also work its way down a toilet to unclog it or grab and retrieve some objects that fall into sink drains or toilets. It is especially useful for fixtures that are back to back such as bathroom and kitchen sinks or for commercial buildings that have rows of plumbing fixtures. This steel drain cleaning auger fits on sizes C-4 and C-6 through C-9 cables. It also works with Ridgid drain cleaner models K-40 K-45 K-50 K-400 and K-3800. The Ridgid drain auger has a coil that can grasp objects by hooking onto them and a pivot that allows the auger to follow the opening without getting stuck. This drop head auger accessory has tough steel construction for long use and comes with a lifetime warranty against defective workmanship or material.