Cap Barbell Olympic 2-Inch Weight Plate, Gray, Single CONSTRUCTION  Made of solid cast iron with a machined center hole and a gray, baked enamel coating. These Olympic weight plates have a 2-inch center hole to accommodate Olympic bars. FEATURES The gray baked enamel coating ensures a durable, reliable weight that will last through grueling workouts. Raised silver numbers help to easily identify weight size. VERSATILE  Weight plates can be used to perform muscle strengthening exercises and endurance training, and to increase flexibility and balance. A single weight plate can also be used for warm-up exercises. CHOICES  These weights are available in 2.5, 5, 10, 25, 35, 45 and 100 lbs. TRUST  Trust experience. CAP has been a pioneer in the fitness industry for over 30 years with locations worldwide. Chances are, if you have ever worked out before you have used a CAP product.