General description High-quality black aluminum cabinet hinges made of durable zinc alloy, designed to resist corrosion and rust. These long-lasting hinges feature a smooth brushed surface suitable for both indoor and outdoor use, enhancing the visual appeal of any space. Technical specifications Material: Zinc alloy Size of each hinge: 40 mm x 40 mm Drilling distance: 25 mm Hinge hole diameter: 4 mm Installation Easy to assemble with quick installation Ball bearing design ensures a smooth opening and closing action Usage Ideal for various types of doors including room doors, entrance doors, wooden flush doors, bedroom doors, garden doors, fire doors, and furniture doors Suitable for applications in shipbuilding and mechanical engineering