The Lionel 6-12032 Fast Track Straight Track 10" Four Pack is a pre-built set of model train tracks specifically designed for O scale model railroads. Made of plastic and featuring a straight track form, this set is part of the Three-Rail System and operates on AC power. With a scale of 1:20.32, this track pack is ready to go and compatible with an analog control system. Perfect for model railroad enthusiasts looking to expand their layout with a high-quality, reliable track system in a stylish gray color.