4 inch x 4 inch size with 5/8'' radius corners, we recommend applying multiple hinges for each interior and exterior door for optimal use. These door hinges are crafted from high-quality iron, boasting a solid and sturdy build for long-lasting durability in daily use; the pin is removable, with a special lubricant applied around it for smooth performance and enhanced longevity. Meticulously manufactured with electroplating coatings, the hinges feature excellent rust resistance, and the built-in damping oil design effectively reduces metal-to-metal friction, ensuring silent and smooth door operation at all times. We stand behind the quality of our door hinges with professional customer support, and should you have any questions or concerns about the product, please feel free to contact us anytime for prompt and thoughtful solutions.
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