The prototype of the car was rebuilt from General America Transportation Corpration 50' Airslide Covered Hoppers by Norfolk Southern between 2007 and 2009 for demoliton service (Series 202000-202199) This HO 1:87 Norfolk Southern Hi-Side Demolition Gondola STL files comes with the body with A and B platforms added, brake wheel and coupler box covers. The only thing you need to complete this model is some 100-Ton rolling bearing trucks with 36' 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!!!