E-Z Track System - Snaps Together, Stays Together on Floors, Tables & Carpets Set Up is Quick, Easy and Fun - No Nails, Screws, or Special Tools Needed Nickel Silver Rail with Gray Roadbed, Designed to Provide Excellent Conductivity and Durability HO Scale 1:87 - Modeled From AAR Track Engineering Dimensions Four Pieces of Track make up one quarter (90 degrees) of a 44" Diameter Circle..Easy to Use For Both Temporary and Permanent Train Layouts