This is a dental model that reproduces the actual size. The jaw part can be opened and closed at least 180 degrees, and the jaw joint is a movable jaw model that allows you to firmly understand the gums, gums, and gums. Also useful as a teaching tool for kids to learn toothbrushing. The life-sized teeth structure allows you to use your imagination, and teach you correct toothbrush strokes and teach your current toothbrush revision. Height 2.0 inches (5 cm), Width 3.1 inches (8 cm), Depth 3.0