This economical skeleton has many features not found in more expensive models. Nerve branches, vertebral artery, and herniated lumbar disks are just a few of the added touches you will find in this useful teaching aid. Complete nut/bolt construction makes the skeleton rugged and reparable. The arms, legs and skull are removable for separate study. Skull includes removable jaw, cut calvarium, suture lines and three removable teeth. Skeleton is 66" tall and is mounted on a 16" wide metal base. Comes complete with a skeletal system identification chart.