The CAP Barbell 50 lbs Olympic Grip Plate Set includes FOUR 10-pound and TWO 5-pound cast iron weight plates with a 2-inch center hole. These weights are designed to be durable and provide long-lasting performance. Built to last, these Olympic weights are crafted from cast-iron and coated with a durable baked enamel finish. The coating adds a layer of protection to help prevent the weight plates from rusting. Featuring three grip holes, these weights are easy to load and unload. Use these weights on a bar or by themselves to increases resistance during training.