1. EXPANDABILITY With this railway building block accessory, you can expand your existing railway building block kit to build a larger freight train track system. 2. COMPATIBLE Our tracks are compatible with major brands and can be used with other construction toys. They are an ideal choice for improving the urban rail transport system. 3. MATERIAL Our panels are made of quality, environmentally friendly ABS material. Your child can safely assemble our tracks, ensuring greater safety during play. 4. CREATIVITY AND FUN Includes enough track accessories to build larger railway systems by expanding existing tracks, offering even more building and playing fun. It enhances children's handeye coordination, practical skills, and problemsolving abilities during construction.