The 3/8" Magnetic Locking Kit is made specifically to help keep cabinet doors and drawers closed on RVs, Campers or any other cabinet dorr or drawer that does not want to stay closed. Simply attach the washer to the door and the cup to the cabinet frame with the screws provided. Then place the magnet into the cup (once placed in the cup, it is very, very difficult to remove). These Rare Earth magnets have super holding power to keep doors and drawers in their place until you open them. Each set includes a 2 magnets, 2 washers, 2 magnet cups and 2 screws to mount of 2 doors or drawers.