[LIFE SIZE HUMAN SKULL MODEL] This is a life size 3 part skull, featuring a removable calvarium and mandible, with handwritten numbered structures. Due to magnet feature, top of the cranium can be removed to see a transverse plane cut through the skull. The mandible is attached by a quality spring. This ensures it open like a mouth but not come apart completely. The mandible is detachable by sliding the spring off the screw to give you a better view of skull structures [ADULT MALE SKULL MODEL] Skull Size: 8.3' x 5' x 6.3'. Item weighs 1.8 lbs. This skull model is from a adult male skeleton and is an excellent anatomical replica. This human anatomy model was developed by medical professionals for the study of human body systems. This anatomy and physiology model is perfect for the classroom where a human body model helps with studies