If you order this product you receive our legendary head model which is also known as the SFVT Practice Head (over 20 years ago), mts Practice Head (at least since 15 years), ELI Model, and now we just call it Head 4 Eyes. The name tells the story: Our head is suitable for all kinds of cadaver and artificial eyes. If you have found an inappropriate eye, just send us a massage along with a technical drawing and we deliver a solution. This head is useless without one of our pads. (LINK) If you are not sure which one you need, just call or write to us. If you need to travel with one or more heads you are lucky because our new model is even lighter than the second generation. Also you are able to stack more heads within the same height of space. For extra security we added another leg to our three-leg system which guarantees you working without slipping or tilting. After use, feel free to clean the head in the dishwasher or autoclave (up to 200 degrees centigrade).