Made of heavy duty stainless steel with high precision, high strength, resistance to breakage, deformation and rust. The anti-rust treated surface of the door hinges ensures good corrosion resistance, sturdiness and durability. Under the effect of lubricated ball bearings, no noise occurs when opening or closing the doors. Ball bearing door hinges have always been popular because of their smooth operation, durability, long-lasting design and ability to withstand heavier loads than standard hinges. Application: This hinge has 8 mounting holes and comes with 16 screws for tight mounting on the door, can also be used in cabinets, doors and windows, wardrobes, tool boxes, etc.