CAP Barbell Rubber Coated Weight Plate CONSTRUCTION  Made of solid cast iron and coated in black rubber to add a layer of protection for fitness equipment and floors and safety for the user. Ground edges and machine center hole ensure a standardized product. 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. FEATURES  Standard plates have a 1-inch center hole to accommodate standard bars. Each weight features a black rubber coating for a safer, durable product that will withstand grueling workouts. CHOICES  These weights are available in 2.5, 5, 7.5, 10, and 25 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.