With this extension set you can extend your Carrera GO!!! track to include two 1/90-degree corners, two lane change tracks, and two straight sections each with a length of 13.46-in. Add challenge and excitement with a lane change, where you and your opponent must prove your skills and choose the correct timing to cross over. You can also use the corners to showcase your talent for the right speed to power ratio. Only if you press the speed button again at the right moment will your slot car dash purposefully out of the corner and onto the next straight. The set is a great addition to all 1:43 scale Carrera GO!!! slot car racetracks.