✔ 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.