Enhance your model railroad experience with Lionel's O Gauge Curved Track Sections. This set includes 16 pieces of pressed steel track with a brown tie color . These are O-54 curves with the 16 up for sale making a full 54 inch diameter circle. They are the O-27 profile and are compatible with Lionel and Marx. The track is designed for a three-rail system and is powered by AC. The wider radius of these curves make your layout look more realistic, especially with passenger cars. These curves were new in the early 2000's