This basic set includes 20 pieces: 15 track pieces from IKEA, one red, one blue, and one green train car (each with a magnet for connecting), and one tunnel. In addition to the basic set, I'd like to offer a self-propelled train from IKEA (requires 2 AAA batteries) with a three-color pattern, and one black Tomica HiAce. I hope you will consider purchasing the whole set! I seem to remember repairing one of the track pieces, but I couldn't find the exact spot when I looked again. I believe the track is connected, so there shouldn't be any issues with connecting the tracks. The self-propelled train and the other train cars (excluding the Tomica) can be connected with magnets and run together.