The WEATHER GUARD Model 359-5-02 Transfer Tank, Column, 50 Gallon. is perfect for transporting diesel fuel and hydraulic fluid. This fuel transfer tank features a column shape and black steel design to ensure your fluids arrive safely. This diesel transfer tank is designed for most full-size pickup trucks and is to be used with Cross Boxes or Saddle Boxes. The vented filler cap in this 50-gallon fuel transfer tank helps to prevent excessive pressure build-up.