Carrera 1:24 Scale Track Extension Set - &nbsp;Accessory Pack includes 12 Pieces - For Use With Digital 124, 132 and Evolution Carrera Slot Car Racetrack Systems 1:24 scale Includes 12 pieces of track 4 straights, 4 curves, 2 lane change sections, 2 chicane Curves can be used for 4, 6, or 8 lane extensions Create a larger, more flexible track layout