Advantage:[Material]- This piano hinge is made of stainless steel with a coated surface, corrosion-resistant and rustproof, which touches smoothly and can be used for a long time.[Smooth & Quiet]- Built-in solid steel bars provide uniform strength and smooth pivot action. Nice welded and extremely silent ensuring that hinges open smoothly and quietly.[Easy To Install] - All holes are countersunk designed for convenient operation and easy to fix the screw. They provide more stability than traditional hinges, making them great for heavier doors.[Wide Application] - Continuous hinges are suitable for cabinet doors, wardrobe doors, piano hinge, window items, tool boxes, jewelry storage boxes, wooden boxes, and gift boxes.Specification:Material: Stainless steelColor: BlackLength: 20" (500 mm),Width: 1.