National Hardware 4" x 1/4" Radius Satin Brass Door Hinge is designed for use on interior residential doors, featuring a 1/4 inch round corner radius that adds a smooth, finished look to your door hardware. This round corner hinge, known as National Model 512RC, is crafted from durable steel and comes with a removable pin for quick and easy installation. Included screws make the setup process straightforward, ensuring a secure and reliable fit. Its satin brass finish provides an attractive and classic appearance that complements a variety of interior styles. Model Number: N830-228