National Hardware Narrow Hinge, 7 lb Weight, Door Leaf Width: 1 in, Door Leaf Thickness: 0.045 in, Frame Leaf Width: 1 in, Frame Leaf Thickness: 0.045 in, Number of Knuckles: 5, Pin Type: Removable, Loose, Pin Diameter: 0.106 in, Full Mortise Mounting, Number of Mounting Holes: 4, Mounting Hole Diameter: 0.165 in, Hole Spacing: 5/8 in, Cold Rolled Steel, Zinc, Dimensions: 1 in L x 1 in W