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 and cutting instructions, and a photo. This helicopter will measure 20" when built. The Apache Attach Helicopter needs 1 - #WH079 Contour Wheel, 2 - #AP600 Axle Pegs, 1 - #TP175 Axle Pegs and assorted dowel. Please note, these items are not included with the plan and must be ordered separately.