Does your Allegheny need some hoppers? Build a complete unit train in a flash with this C&O ten-pack! Coal trains don't have to be boring. This set comes with two flat-end AAR hoppers, four peaked-end AAR hoppers and four ribbed side hoppers representing some of the C&O's rebuilding efforts in the late 1950s. It's the perfect pairing for our Alleghenies or other C&O steam and diesel power.