Models are molded in rugged ABS plastic simulating the all wood construction of the sides, ends and roof. Side and end ladders with music wire rungs, USRA style fish belly center sill, KC brake system with a Vertical brake shaft, die-cast metal sprung trucks and opening roof hatches are also included. Each reefer comes with 4 code 110 NMRA RP-25 metal wheelsets and the mounting holes for the KD #802.