Material: aluminum alloy, popular for its smooth operation, durability and ability to withstand greater loads than standard hinges Size: L*W 9.5 * 4cm. Simple appearance: exquisite craftsmanship, beautiful products, good finish No rust, not easy to wear and have strong corrosion resistance If you have any questions, please feel free to contact us, we will reply within 24 hours, Manufacturer: Shun Yingtong