This is the HO Scale Unitrack - Straight Sections - 3-11/16'' 94mm pkg(2) by Kato USA inc.
??_??__ With Kato's HO Scale Unitrack Modular Roadbed Track System, you can have an operating layout in minutes. Whether you're a beginner or expert, Unitrack offers hours of enjoyment and trouble-free operation. Suitable for all types of layouts, whether temporary or permanent. This modular track system features an integrally molded roadbed for realistic appearance.
??_??__ Uni-Joiners (included) lock the track sections together for easy assembly and solid electrical connections.
??_??__ NOW WITH NICKEL-SILVER CODE 83 RAIL