説明 √ High Quality? Non-toxic durable PVC material, easy to clean. The spring is sturdy and the jaw is firmly held in place with no loose action in the movement. Easy to remove the spring with one screw. Size: 3.9*2.75*3.9 inch. √ Anatomical Skull Model ? This 3 parts mini human skull has every detail that the big models have, including the holes, sockets, canals, and a complete set of human teeth. It also shows the bones structure, texture, articulating mandible, eye sockets, sutures, internal nasal cavity, and the endocranium cavity. √ Great For Study ? Palm-sized designed to better learn about the human skull and be lighter, smaller and easier to move and carry. The calvaria is detachable as well to deeper look into the skull bone model and study. √ Multiple Uses ? This model is a great teaching aid for anatomy and physiology courses; also a great human skull model for kids learning.You can set off the atmosphere, as a collection decoration for your gothic style room, or give your friend who likes the skeleton, are the best choice. √ Multiple scenarios ? For school teaching, learning, researching display tool and lab ornament supplies.it can also help with designing and printing fun decoration such as Halloween decorations,pirate themed decorations,etc.