LEGO System 4520 Curved Rails

LEGO 4520 Curved Rails is a Trains 9V set released in 1991, containing 8 pieces. The pack provides eight curved track sections for the 9V Train system and is compatible with later Remote Control trains. It was also included in the product collections 65801 Trains Value Pack, 65537 Classic Freight Train, and K2159 Holiday Train Starter Collection.