THOMAS & FRIENDS GRUMPY DIESEL ENGINE w Moving Eyes HO Scale. Bachmann carefully reproduces your favorite Thomas & Friends characters in HO scale. All locomotives feature realistic faces with moving eyes, operating HO scale electric drive mechanisms, highly detailed plastic body shells, all metal wheels, and international style hook and loop couplers. Build your Thomas & Friends collection one friend at a time! Features Operating HO scale electric locomotive Featuring detailed character face with moving eyes and realistic body shell All metal wheels with factory installed international style hook and loop couplers Performs best on 15 radius curves or greater Runs on Bachmann HO scale E Z Track , and is compatible with all popular brands of HO scale track Product Measurements Length 5 in., Width 1.25 in., Height 2 in. Retail Package Measurements Length 7.5 in., Width 2 in., Height 6.75 in. UPC 022899588186