High-quality materials - The metal piano hinge is made of high-quality iron, durable and corrosion-resistant. The surface treatment is chrome plated. The chrome-plated long hinge technology is skilled. The surface is beautiful, smooth and shiny, and it is not easy to rust. It ensures smooth opening and closing, making the metal piano hinge durable and long-lasting. .Stable bearing - The hinge bearing of the metal piano hinge is very thick, and the 5mm thick shaft is particularly stable and wear-resistant. There is almost no wear during use, and it is not easy to stagnate when rotating. It is very strong. .Easy to install - This foldable hinge has 6 pre-drilled holes to help distribute the load weight evenly, and is equipped with 12 packs of 3mm x 15mm screws to be used together to make it securely installed. .Built-in installation design - This foldable split hinge has a small overall gap and good concealment. The built-in installation screw design can ensure that the installed screws do not protrude, remain flat, and will not cause danger to your activities. And make the built-in cabinet hinges more beautiful, easy to match with different decoration styles. .Wide range of uses - Metal piano hinges are widely used in pianos, DIY home decoration, furniture repairs, cabinets, cupboards, doors and windows, gardening and other occasions. Heavy duty kitchen hinges can also be used for hinge lids, hatches, modern water wheels/boats/yachts/caravans, etc. . Gift