SmartTote2 Portable RV Waste Tote Tank - 2 Wheels - 12 Gallon - Thetford 40505 [VERSATILITY]: Thetford's SmartTote 2 RV waste tote can be used with any RV type, right out of the box [DESIGN]: The rugged 12-gallon tank is easy to use and maneuver [FUNCTIONALITY]: AutoStop level gauge prevents overfilling and improves venting [OPTIONAL]: SmartTote 2 can be fitted with a tow strap, which can be hoked to the RV or the car hitch, for transporting the tote to the dumping station