SOSS Invisible Brass Hinges for 1/2" to 5/8" Doors are expertly crafted to fit doors with a thickness between 1/2 inch and 5/8 inch. These hinges feature a concealed design that ensures a clean and seamless look, for applications where aesthetics are a priority. Made from durable brass with a satin brass finish, they add an elegant and refined touch to your door hardware. Part of the 100 Series, each hinge is sold individually and provides smooth, quiet operation while maintaining a discreet presence. This combination of functionality and style makes these hinges a popular choice for a variety of door installations. Model Number: 100CUS4