Camco RhinoFLEX 6-in-1 Sewer Cleanout Plug Wrench with Easy Grip Handle- Easily Loosen Any RV Dump Station Cap with Universal Design, 3" or 4" Male and Female Sewer Cleanout Plugs (39755) Loosen any dump station cap with ease Works with 3" and 4" male or female plugs Works with slotted or flush sewer plugs Universal 6-in-1 tool Easy grip handle