Model: NON-CODE / 5200G / REAR UNLOAD, THIS WAS DESIGNED FOR STANDING STORAGE IN THE OIL FIELDS BUT THE TWO THAT I HAVE WERE NOT USED MUCH AT ALL. BOTH ARE IN VERY GOOD CONDITION, SUSPENSION: SPRING, MODEL: NON-CODE / 5200G / REAR UNLOAD, COMPOSITION: STEEL, AXLE: TANDEM