Toys & Joys plans are beautifully detailed and have been designed to be used as desk objects and shelf models. Plans include a material list, detailed drawings, complete assembly instructions and a photo. Wheels, axle pins and some miscellaneous turnings are available for this plan from Stockade. The Big Rig uses 19 - #WT275 - Tread Wheels, 10 - #AP600 - Axle Pins, 2 - #WH125 - Contour Wheels and 1 - #JY38 - 3/8" Screwhole Buttons. Please note that these parts are not included with the plan and must be ordered separately.