The pair of CAP Standard Dumbbell Handles accommodates 1 in standard plates. These dumbbells feature diamond knurled hand grips and are designed with high quality steel. Whether you are building endurance or simply want to increase your flexibility, you'll find that these dumbbell handles make an awesome contribution to your overall fitness. These dumbbell handles are tried and true, having gone through a rigorous testing process. This pair of dumbbell handles will make your workout as effective as possible.