Kidney stone model is used to provide information about kidney stones (nephrolithiasis) and urenery stones (urolithiasis). Mounted on a base, appropriately colored and numbered with key card. The renal calices, the renal pelvis and the ureter are opened to identify the position i.e in the area of the renal pyramids, origin of the upper calix group, renal cortex, in the connecting tubules of the lower calix group, causing congestion of the minor calices (partially closed partially opened) and in the ureter.