SmartTote 2 RV Portable Waste Tote Tank - 2 Wheels - 27 Gallons - Thetford 40502 SmartTote2 waste tote tank can be used with any RV type, right out of the box Rugged 27-gallon tank, easy to use and fast emptying Retainer strap holds the heavy-duty sewer hose in place AutoStop level gauge prevents overfilling and improves venting Easy to maneuver - optional tow strap hooks the tote to the RV or car