Model Number: XC-309 Key Specifications/Special Features: Product measurement:10pcsProduct size:63*28*20 CMProduct weight:G.W/N.W（10Kg/9kg）Product quantity:20 pcsProduct description:This is an instructive apparatus for teaching physiology and hygiene in middle schools, to help the students to understand the internal structure of the nasal cavity. Demonstration:1. External nose: shows the section of the nasal bones and cartilages.2. Nasal cavity: on the lateral nasal wall show the superior, middle and inferior nasal concheaproject medially into the nasal cavity forming the superior, middle and inferior nasal meatuses.3. Paranasal sinuses: shows the frontal, sphenoid and maxillary sinuses. Magnified 1/2 the natural size. Made of PVC. Main Export Markets: Asia