Made of solid cast iron with a 1-inch center hole. It fits any standard bar with a diameter of 1 inch or less, and is also compatible with 1-inch dumbbell bars. All weight plates come with a durable black baked enamel finish, protecting them against rust and corrosion with no unpleasant odor. Marked with both LB and KG units for quick and easy weight identification. These weight plates are ideal for muscle building and endurance training, and can also help improve your flexibility and balance.
