Get the farmer to his field to collect his hay bales and even give the animals a lift whilst you39re at it this classic pull along tractor and trailer set are made from wood with sturdy plastic wheels that ensure a smooth ride need to separate the tractor from the trailer no problem the trailer can be hitched or unhitched at will using the simple toggle that links the two together and when you39re ready to call it a good day39s work just pull the red string and lead the tractor ba