B10203 Desktop Human SkeletonDesktop Human Skeleton This 17" (43 cm) skeleton model is sure to give years of learning fun and is a great demonstration model for learning basic anatomical features. This skeleton features a movable jaw on springs, natural movement of the joints with the exception of fused carpals and tarsals. Constructed of rugged plastic with a black plastic base. Features include unbreakable ribs, stainless steel screws, brackets and springs to resist corrosion.