HO scale 89' Thrall Bi-Level Auto Carrier - Ready to Run Burlington Northern Santa Fe Rack #20846/TTX Flat #603115 (yellow, black) * Seen on Rails Across the US & Canada Today * Factory-Installed Grab Irons * Separately-Applied Ladders & Brake Equipment Details * Ultra-Smooth Rolling Metal Axles & 33 Wheelsets * Proto MAX(TM) Metal Knuckle Couplers PLEASE NOTE: As these cars are the correct prototype length, a minimum 24 radius is recommended for operation.