The Lionel O31 Gauge FasTrack Lot of 5 Full Curve is a set of O scale model train tracks that are ready to go out of the box. Manufactured in 2016, these gray tracks are made of metal and plastic, featuring a three-rail system for optimal performance. With an analog control system, these tracks are perfect for model railroad enthusiasts looking to expand their existing train layout. Ideal for collectors and hobbyists, this set includes five full curve tracks that can be easily painted to match any design aesthetic.