Tanks Made in high quality polithene (Eltex) plastic. Suitable for acids and fuels, complete with standard inspection portholewith cap, vent, air-vent terminal of 3/8in, fuel pickup and the tank is ready to be used. The port hole is ready to take a fuel guage (mechanical of electronic), elbow terminal of 1/4in for rubber hose as second fuel pick-up or disel return, for fix installation.