This large steel washer or spacer has a diameter of 4 1/2 inches and a center hole of 2 1/8 inches, with a thickness of 3/8 inches. Made from durable steel material, it is perfect for use in various industrial applications. The washer or spacer is designed to provide a secure fit and prevent any vibration or torque from causing damage to the fastener. Ideal for use in business and industrial settings, this item is a must-have for anyone looking for a reliable and high-quality fastener.