Recommend Frosted Ultra Detail for printing. This is a sprue of five (5) 1:400 scale models of a flatbed semi-trailer (trailer only). They include hand rails and removable steps used to climb up on the flatbed. This scale matches many common model airport scales and is very close to T-Gauge railroad models (1:480). These models are perfect for airshow reviewing stands or media risers. Thank you for checking out my shop, and thanks to paulburkittgray for creating the model.