UGears Trailer for Tractor Wooden Model Kit. UGEARS. Get ready to hit the farm in style with the UGears Trailer for Tractor Wooden Model Kit! This amazing kit includes everything you need to build your trusty trailer, as well as all the tools to tackle any farm job! From digging holes with the shovel, or moving hay bales with the fork, your mini model even comes with a tiny bucket and broom!