1. This model uses a fifth-segment lumbar vertebra and a fifth lumbar vertebrae, which are composed of a soft elastic body, which is convenient for the to demonstrate, lumbar disc herniation, and shows the changes of the human intervertebral disc when the human body bends when it is distorted, 2. This model is widely used in orthopedics, surgery, for clinical teaching, occupational disease prevention, ergonomics, education, etc. It has good auxiliary teaching and demonstration 3. Made of high- PVC, and it is easy to wash. 4. Lumbar Vertebrae Model only,ther accessories demo in the is not included. Specifications: Type: Lumbar Vertebrae Model Colour:As shown Material:PVC Package Contents: 1 * Lumbar Vertebrae Model Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it