General description Our flat folding hinges are crafted from high-quality zinc alloy, ensuring corrosion resistance and durability. The brushed surface is smooth, making these hinges suitable for both indoor and outdoor use. The design features closely connected ball and bearing components that cushion the door for quieter operation. Technical specifications Material: Zinc alloy Design: 4-hole mounting for stable and secure installation Usage This heavy-duty door hinge is versatile and can be installed on various types of doors, including: Bedroom doors Entrance doors Garden doors Fire doors Furniture doors Tool boxes