Fisher-Price Thomas & Friends TrackMaster, Sodor Spiral Expansion Pack Includes straight and curved track pieces and building risers Connects to other TrackMaster playsets, track packs and expansion packs (sold separately) Includes 2 track adaptors, designed so you can connect the new TrackMaster track to the previous model Redesigned to deliver an authentic Thomas & Friends experience with stronger connector plugs and a more realistic railway look Perfect addition to your expandable, connectable, motorized Thomas & Friends TrackMaster world