National Hardware Spring Hinge, Door Leaf Thickness: 0.056 in, Frame Leaf Thickness: 0.056 in, Pin Type: Removable, Surface, Wall Mounting, Mounting Hole Diameter: 3 mm, Cold Rolled Steel, Brass, Dimensions: 3 in W, Suitable for: 3/4 to 1-1/4 in Thick Doors, Includes: Screws