Made of durable stainless steel, precision machined, high strength, not easy to rust. The anti-rust treated surface of the door hinges ensures excellent anti-corrosion, strength and durability Quiet: Due to the action of the lubricated ball bearing, there is no noise when opening and closing the door Ball bearing hinges have always been popular for their smooth operation. Suitable for standard indoor front doors, a pair of hinges is enough Applications: Hinges with 8 mounting holes can be installed closely to the door, and can also be used for cabinets, doors, windows, cupboards and tool boxes, etc.