Constructed by stainless steel shell and thickened iron catch plate, with a rounded frame which won't hurt your hand, rustproof, sturdy, and durable. Each Magnetic door closer internally using a single magnet with a strong force that holds the door, drawer, window, or gate closed tightly. The package includes steel mounting screws which are very easy to attach to the screwdriver with magnetism. Take you a more convenient installation. Ideal for use in bedrooms, bathrooms, kitchen, closets, cupboard, cabinet door, drawer, and sliding doors or windows.