Features: 100% Brand new and high quality. Clear acrylic lower jaw base allows view of impl. Four generic impl with removable inferior overdenture by ball and o-ring clip connection. Good model for teaching, demonstration, and education in class. This dental caries model is made of high quality plastic for durability so it is not tend to be fragile. Specification:Material: PlasticWeight: 103gSize: 7*5.5cm/2.76*2.17inPackage Includes:1 x Dental ModelNote:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.