High Quality Materials- The piano metal hinge is made of high-quality iron, wear-resistant and corrosion-resistant. The surface treatment is chrome-plated. The chrome-plated long hinge technology is proficient. The surface is beautiful, smooth and shiny, and it is not easy to rust. It ensures smooth opening and closing, making the piano metal hinge durable.,long lasting. .Sturdy Bearing- The hinge bearing of the piano metal hinge is very thick, and the 5 mm 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 folding hinge has 6 pre-drilled holes to help evenly distribute the load weight, and is equipped with 12 packs of 3mm x 15mm screws to be used together to make it securely installed. .Embedded Installation Design- This foldable split hinge has a small overall gap and good concealment. The embedded 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 Applications- Piano metal hinges are widely used in pianos, DIY home decoration, furniture repairs, cabinets, cabinets, doors and windows, garden maintenance and other occasions. Heavy-duty kitchen hinges can also be used for hinged lids, hatches,modern waterwheels/boats/yachts/caravans, etc. . Gift