Material: Made of food-grade PVC environmental protection material, prototype, pure handmade, strong and not damaged. A near-real human skull display. The PVC material has no fear of being ruined by students, so it will be a great addition to your lab supplies. Great as school teaching tools, learning displays and collectibles, it will also be a great addition to your lab supplies. It allows you to study the attachment of the cervical spine, carotid artery and cervical nerve while studying the human skull, meeting your various needs and enabling you to learn related knowledge more comprehensively. Skull size: approx. 22 x 16 x 13 cm Adult skull model with separated bones for easy visualization of cranial features. Attached are the cervical vertebrae and carotid arteries and cervical nerves. It can help students to carry out comprehensive teaching practice, effectively combine theory and practice, make the greatest progress, and enable students to effectively master relevant knowledge. It is a rare tool for students' practical training. Teaching tools: use different colors to distinguish different positions, bright colors can easily attract students' attention, and can be used for teaching demonstrations to promote students' understanding