The Diesel Unit Train Locomotive scale model by Shing Fat measures about 7 inches long by about 1.5 inches wide by about 2 inches high. It has very nice details such as separate clear plastic windshield. The coloring is done is high gloss finish with accurate markings and branding. The wheels are free rolling and made of plastic. Moreover the back wheels have pull back action, which means that it will wind up when you pull it back and it will roll if you let it go.