Realistic endoscopic trainer designed to improve diagnostic skills in the large intestine - colonoscopy. It has a very detailed external and internal appearance with endoscopic access to the areas of the ascending, transverse and descending. The model can be equipped with removable fragments narrowing the lumen of the large intestine and polyps in selected locations. The simulator is delivered with 4 polyps installed and 4 removable, as well as one narrowing of the large intestine.