Cholesterol: 4-Stage cross section of an artery demonstrating arteriosclerosis in which the narrowing of the artery is due to a build up of fatty tissue (cholesterol) and plaque. 4-Stages: normal artery, fatty streak, fibrous plaque, and blockage. The stages cause a decrease in blood flow, which can lead to a blood clot or thrombus. All stages rotate on hinge pin. Suitable for Cardio-Vascular, Cardiology and Internal Medicine, general anatomical study, training for dissection, or for patient education or demonstration of procedures. Quantity discounts available. Made of a durable, material accurately designed and colored to represent the major structures and, in certain instances, lesions or other abnormalities as described above. Size: 10.5x10.5x10cm color: red Material: PVC Package Content: 1* Vascular Model Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.