This is a rear fully adjustable sight for the Beretta 92, 96, 98, M9, Stock, Brigadier, 90Two Pistol. 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 top quality LPA brand sights made in Italy. 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. Will not work on Novak dovetails.