E-Z Track with Nickel Silver Rail & Gray Roadbed 15-1/2" Radius Curved Section (6-Pack) BAC44854Details: Easy to set up on any surface, including floors and rugs, no special tools, nails or boards are needed. Low oxidation nickel silver rail is easy to keep clean and corrosion free with normal indoor use and gray roadbed is similar in appearance to the real thing. It's a great track system for Christmas displays or permanent layouts. As reference, 12 sections of curved 11 1 4", 12 1 2", 14" or 15 1 2" radius track make a full circle; 24 sections