Subject: Science Type: Skeleton Model color:white Material: PVC Energy characteristics: This model is divided into two groups of four normal in proportion to the size of the vertebrae consists of a combination of normal vertebral body and three groups of lesions vertebral combination can be divided into two groups. The first group display normal vertebral bodies and intervertebral disc and the intervertebral disc prominent contrast; the second group show vertebra bone and intervertebral disc degeneration, bone and osteoporosis caused by compression and presentation of spur. PVC plastic card, card with the production of plastic! The use of environmentally friendly PVC, hand colored size :27 * 15.8 * 10cm weight :620G Package Contents: 1 * Spine model Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.