Canadian 4 Bay Cylindrical Grain Hopper - SCOULAR #1687 - HO Scale. 4 Bay Cylindrical Grain Hoppers were designed to efficiently move crops across North America. These hoppers are best known for the colorful paint schemes and will add color and excitement to your train layout. Each Bachmann Grain Hopper car is fully assembled and features Highly Detailed Painted Bodies with Precision Graphics (where applicable), Blackened Machined Metal Wheels with RP 25 Contours, Magnetically Operated E-Z Mate® Couplers, Non-magnetic Blackened Brass Axles with Needle-point Bearings, Celcon Trucks, and Added Weight for Optimum Tracking Performance