This was AZL’s first injection molded freight car release. The initial road names were Conrail, CSX and NS. The cars come four to a package with AZL’s roller bearing trucks, blackened metal wheels and AZL AutoLatch™ couplers. AZL AutoLatch™ couplers are compatible with MTL’s couplers. The wheels are blackened. An simulated coal load is included with each car. Freight Car America has some info you may find interesting on the Bethgon Coalporters.