Rubber Road & Rail Extension Tracks Set CThe PlanToys Rubber Road & Rail Extension Tracks can add even more dynamic to your city's play infrastructure! The flexibility of the rubber allows kids to create unique pathways and transportation designs. This set comes with 6 two sided rubber tracks (2 straight and 4 curved). Compatible with other transportation systems in the PlanWorld series. This is expansion set C Compatible with PlanToys trains and cars and most other brands on the market.