Robbie Dalton Brass Knuckles, 13, Blue. This item is made of real solid Brass. This item has a overall length of 4.5 inches and a height of 2.5 inches. It has a solid and smooth finish. Huge holes with a diameter of an inch. It's easy to clean and shines like new. Weighs in at 15 ounces Length: 4.5" Height: 2.5" Almost 1/2 an inch of thickness Heavy Duty and Solid Brass