This smaller size train set includes a steam or diesel locomotive with freight or passenger cars. The train set includes 8 pieces of track that makes a 6ft circle. Kids will have a great time with these trains. One AA battery is all that is needed to get the fun started. The back of the packaging has the instructions and some fun facts about railroading. Sorry no set choice is available due to the fact they come in many different setups. For kids ages 3+. Engine measures 4.5 inches long and 1.5 inches tall.