CAP Barbell Olympic 2-Inch 3-Grip Rubber Plate, Single CONSTRUCTION  These weights are made from solid cast iron and covered in rubber to provide a protective layer around the weight. The rubber coating prevents floors, equipment, and the weight itself from getting chipped or damaged. FEATURES 2 center hole to fit on Olympic bars; Each weight has grip holes (5 lb. & heavier) for easy handling; rubber coating ensures weights will last a long time & not damage equipment & floors; 12-sided design prevents weights from rolling. 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 weight plates are available in 2.5, 5, 10, 25, 35 and 45 lbs.; there are grip holes on the 25, 35, and 45 lb. weights for a secure grip when loading and unloading the weights. 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.