1.The price listed for all products is for a unmarried unit, and the products don't come with screws. Buyers deserve to purchase screws separately.2.The installation of screws relies on the purposes of the shopper installed, since the set up of the thickness of the plate isn't the same, the size of the screws are different, and there are metric formula imperial components U.S. system, there are cup head countersunk head pan head ball head features or constant with screws and nuts or self-tapping screws, so the seller does not bring screws, please understand!