This is a Rear Fully Adjustable sight, Black Serrated, for the CZ Pistol Model CZ85 Old Model style pistols. This sight sits "Low Profile" and made to work with the original front sight on the pistol. Additional wrenches are included in the package. These are LPA brand sights that come from Italy, they are top quality. The rear sight is fully adjustable, for elevation and windage, so you may adjust it in any way to your liking to correct your pistols point of impact. The sight set is made of steel construction, Not plastic. These sights use the original dovetails/slots on the pistol slide. These are the best sights on the market today to improve your pistols sighting. LPA Part Number TPU85CX07.