Make your Thomas & Friends TrackMaster world bigger with this Motorized Diesel engine! Push Diesel along or flip the switch to watch him chug along by himself. It"s easy to put a favorite story in motion with Trackmaster playsets and accessories. Requires 1 "C" battery (batteries not included) Dimensions: 5"L x 1.5"W x 2.25"H Small parts not recommended for children under the age of 2 Ages 3 years and older and is ONLY compatible with other Thomas & Friends Trackmaster vehicles and playsets! (Colors and Decorations May Vary)