This is the basic model skull used in doctors offices and medical school. Accurate anatomy. Removable skull cap (calvarium). Called a 3 part skull since it's composed of 3 separate pieces, the jaw, the skull, and the skull cap (calvarium) Made of durable PVC. This is a budget model and ranges in color from white to creamy. May have all teeth or may be missing 2. Product dimensions: 8"x7"x5".