Made of heavy duty stainless steel, precision crafted, high strength, not easy to rust. The anti-rust treated surface of the door hinges ensures excellent anti-corrosion, firmness and durability Quiet: Under the action of the lubricated ball bearing, no noise will be produced when opening or closing the door Ball bearing hinges have always been very popular for their smooth operation. Suitable for standard interior residential doors, a pair of hinges is adequate Applications: The hinges with 8 mounting holes can be firmly installed on the door, can also be used for cabinets, doors, windows, wardrobes, toolboxes, etc.