Base of the lower transparent acrylic jaw to see the implants 4 generic implants with removable lower Prosthesis by ball connection and toric clip Good to explain the operation of the prosthesis. Size: 6.5 6 3.5 cm ? I am very happy that you can visit my shop, I wish you a one-stop shop, good shopping!✓ Application-Ideal for educational programs, demonstrations and student learning in dental schools.Good model for teaching, demonstration and education in class. ✓ Mobile Design - Four Universal Implants, Removable Under Dental Prosthetics with Ball Connection and O Toric Clip. ✓ Easy to use - The base of the transparent acrylic mandible can see the implant. ✓ High Quality - This dental caries model is high quality plastic, durable and therefore not brittle. ✓ Characteristics-Explains the function of dental prostheses, 4 types of current implants with removable lower jaw, which explain the functions of dental prosthesis.