TrackMaster motorised engines have been redesigned so you can experience the Island of Sodor like never before. With enhanced speed and performance, these engines go faster and climb steeper inclines, driving Thomas & Friends to greater speeds, taller heights and bigger adventures. Flip the switch and watch Diesel race along on another exciting journey. Hes the perfect addition to your collectable, expandable, motorised TrackMaster world. Requires 2 x AAA batteries (not included).