This is a Kato 20-544 N Scale 16-5/16-15 45° Concrete Slab Double Viaduct UniTrack (Pack of 2)

Model Number: B-269

Model Number: 267584

Flatracks will have magnets in the bottom (underneath)

Here is a Walthers 932-5851 HO Great Northern 50' DD OB Auto Boxcar Kit # 41744

Broadway Limited 3830 N Air Products Cryogenic Tank Car #80058 ProductID_11485661 This is a Kato 20-544This is a Broadway Limited 3830 N Scale Air Products Cryogenic Tank Car #80058. It features: Precision Paint, Color, and Lettering Schemes, Many Separately Applied Details including Hand Rails, ladders, brake wheel, roof walkway, Beautifully Detailed and Accurately Modeled, Precision Paint, Color, and Lettering Schemes, Composition: ABS, Couplers: (2) Operating MicroTrains Compatible, Compatible Tracks: Code 55, 70 and 80 Rail & Minimum Operating