Poor Bucky . . . he did not meet my expectations based on other reviews. I knew he was a "budget" skeleton, but there were so many issues with him he had to go back. He did not come with directions for assembling. The stand with four wheels is not suitable for stability in a classroom of young children. A fellow teacher has a model with five wheels and it is MUCH more stable. The stand that the wheels were attached to already had rust on it.A thin metal rod was missing at the end of one humerus so the lower leg could not be attached. The rod could not be attached even if one had been sent - it was something that had to be inserted during the manufacturing process. Finally, there were a number of sharp places sticking out on the bones that should have been filed smooth. I actually cut open my finger on a sharp spot in the middle of the sternum. Maybe I just got a "lemon", but there were too many things wrong for me, even at that price.