TRINITY 5161 3-BAY COVERED HOPPER - BNSF #479363 (Circle Cross) - HO Scale. Standing for 5161 cubic-foot capacity, the Trinity Railcar 5161 is one of the most prevalent covered hoppers currently in operation on North American railroads. debuting in service in 1995, the type can frequently be found both in unit trains and on mixed freight manifests, with over 27,000 in service. designed for hauling bulk commodities, the 5161 is commonly used in the transportation of grain, sugar, plastics, and dry chemicals. Bachmann's Trinity 5161 expands on our line of modern-day freight rolling stock and features separately applied components such as roof walks and brake wheels. Features include: authentic modern-era design, highly detailed painted bodies with precision graphics, separately-applied details, magnetically operated E-Z Mate® Mark II couplers, blackened machined metal wheels with RP25 contours, HO Scale 1:87