Model, Wurtzite Crystal, named after the mineral wurtzite, is a crystal structure for various binary compounds, It is an example of a hexagonal crystal system, Wurtzite contains 39 - 1 inch balls, Dimensions: 24 x 2
Numbered Skull Model, with 4D Brain and Cervical Vertebrae, Realistic details, texture and bony landmarks make this model ideal for educational and medical demonstration, Mounted on a base and includes a numbered key card