National 4 in. x 5/8 in. Radius Satin Nickle Door Hinge is a round corner residential door hinge designed for use on interior residential doors. It features a 5/8 inch round corner radius, providing a smooth and clean appearance. The hinge includes a removable pin, allowing for quick and easy installation, and comes with screws for convenience. Made from durable steel material, this hinge ensures long-lasting performance and reliability for your door needs. Model Number: 512R5/8