The prototype of the car was manufactered by Trinity Industries Incorporated. This HO 1:87 Trinity Industries A-Frame Track Panel Turnout Car STL files comes with body A and B body, A-B body, big wheel, chain box, connecting rods, small connecting, brake wheel and coupler box covers. The connecting rods and the small connecting rods is for A and B seperate body channel holes at each end so you can instert them in, then glue each end and then link the A and B bodies together as one. Also you can use the connecting rods and small connecting rods for the Transco Railway Products A-Frame Track Panel Turnout Car A and B seperate bodies. 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!!!