USA Heavy Duty Black Belt Buckle & Knuckle. This is the Heavy Duty Paperweight Buckle and Knuckle with a Black color finish. This knuckle comes complete with four finger holes which can fit almost any size fingers. Also comes with a belt pin to fit on any of your belts. This is truly a collectors piece. Get it while supply last. Finger Holes Dimensions: 1.1 X 1 inch. Color: Iridescent. Thickness: 1/2 inch.