Greenbrier Dura-Max aggregate, crushed rock, and gravel hopper for 3D printing. (Use resin printing for best results.) This is modeled after the version currently used by Florida East Coast FEC. Files for three scales are included, HO 1:87, N 1:160, O 1:48. The cars just need trucks and couplers. There are two handrail variations included. And there are two print options: one-piece or separately printed end platforms. If you buy the model and find anything to improve, just let me know. Files updated 7-31-25