Features: Firmly Secured: The detachable skull is firmly secured by a pair of magnets and a series of small nails, which facilitates a great deal of uninterrupted research on the skull. Move Naturally: The mandible is fixed with quality spring, which can make the jaw move naturally. Color Recognition: The skeletal structure of the skull can be identified by the attached color recognition card. Unique Bright Color: Each pair of bone and skeletons is painted with a unique bright color and can be quickly identified by using cards. Easier to Locate: Paired skeletons (such as parietal bone) are recognized as a single color, making it easier to locate in operation. Specifications: Material: PVC Color: As The Picture Shows Package Weight: approx.180g Size: approx.8.1x12.6x9cm/3.18x4.96x3.54in Package Includes: 1Pc x Human Skull Model note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!