Bachmann Industries Roller Bearing Freight Trucks without Wheels (12/card) N ScaleCategory: Roller Bearing Trucks Micro TrainsProduct description Brand new in package. Made from quality materials. From the Manufacturer Roller Bearing Freight Trucks with o Wheels (12pr/card) N Scale Snaps Together, Stays Together on Floors, Tables and Carpets. No Nails, Screws, Or Special Tools Needed. N Scale - 1:160 - Conforms with NMRA (National Model Railroad Association) Standards.