The Camco three-in-one flexible sewer adapter is a black, flexible fitting that makes connection to a sewer inlet easier and less hands-on, even when the inlet threading is stripped or dirty. Instead of twisting the four-in-one adapter into the threading on the dump station, put the three-in-one adapter on the bottom of the four-in-one and simply press it into the dump station. The ridges on three-in-one will keep the sewer assembly firmly in place. The three-in-one can also be used without the four-in-one adapter, by placing the sewer hose directly in the three-in-one. Adapter is compatible with 3 in NPT, 3-1/2 in NPT and 4 in NPT sewer inlets and features wings for easy removal, with holes in the wings to attach a rope if desired.