National 3-1/2" x 1/4" Radius Oil Rubbed Bronze Door Hinge is designed for interior residential doors, featuring a 1/4 inch round corner radius that adds a smooth, finished look to your door hardware. This round corner door hinge, known as National Model 512RC, is made from durable steel and comes with a removable pin that allows for quick and easy installation. The package includes all necessary screws, making it a convenient choice for your door hardware needs. Its oil rubbed bronze finish a classic and elegant appearance that complements a variety of interior styles. Model Number: 512RC