Features: brand new and high quality Metal connection frame, durable, made of PVC, can be used for a long for time. Environmental friendly and non toxic, harmless to human, can get one toothbrush for free. Easy to observe, not easy to broken, can be used to teach kids knowledge about tooth care. Two types to choose, suitable for teachers and students in the iatrical field, an for ideal teaching aid. Soft tongue can be turned up and down, precise ratio is conducive to a better understanding of the real object. Specifications: Material: PVC Size: Approx. 15.5x10.5 for cm/6.10x4.13 inch (Before Stretching) Type: Tooth Care Model/Tooth Care Package Includes: 1 Piece Human Teeth Model note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Remove the dust and wrap it in a plastic bag after use, store it in dry, ventilated and dark place, please do not approach the heat source.