The prototype of the car was manufactered by Transco Railway Products Incorporated. This HO 1:87 Transco Railway Products A-Frame Track Panel Turnout Car STL files comes with body A and B, body A-B, big wheel, chain box, brake wheel and coupler box covers. Also with body A and B comes with channel holes at each end of the body for metal rods so you can glue and link the A and B bodies together as one. The only thing you need to complete this model is some 100-Ton rolling bearing trucks with 33' metal wheels and metal couplers of your choice. Also you need 2-56 x 1/4 phillips pan head screws for the trucks and 2-56 x 1/8 phillips pan head screws for the coupler boxes. Note these STL files is for personal use only and not to be commercially reproduced!!!