This 3.5 in. model contains 17 detachable parts and display stand. Build your own human anatomy model of the skull This exceptionally detailed parts and a display stand. Also includes illustrated assembly guide and description of the anatomy along with some fun Q&A to test your knowledge A nice addition to curriculum for teaching kids human anatomy or any childs science fair project related to human anatomy. Collect the series and have your own human anatomy museum For ages 8.