The Design The inside of the tote tank is smooth (so that it doesn’t trap odors or debris) and sloped toward the drain hole (making it easy to empty completely). The large, no-flat wheels have bearings to make them sturdier and have a large circumference to make going over rough terrain easier. The bottom of the tote tank features an integrated ladder hook and tie-down grooves, allowing you to hang the tank on your RV’s ladder when it is empty. The top of the tote tank features two separate water inlets: one is an integrated tank rinser that can be used with a Grey water hose. It has an easy grip connector, backflow preventer, and multi-directional spray that helps clean away debris from the sidewalls of the interior of the tote tank. The other water inlet is male connection that can be used with the included 15-inch female to female orange grey water hose. Brand new in box with all accessories. Has some damage to one opening where sewer hose screws on from shipping but does not prevent it from being screwed on see pictures. This item is almost $300 online