Add a CAP 12-Sided Coated 15 LB Dumbbell or two to your home gym to add versatility to your workouts and gain muscle mass. Dumbbells are used to exercise all major muscle groups, including arms, chest, back, abs, legs and core. The benefits of dumbbell exercises include muscle building, improving core strength, boosting balance, providing better bone health, burning calories, increasing energy levels, enhancing overall mood and more. Dumbbells are perfect for iOS, full body, functional training and HIIT workouts. The CAP 12-Sided Coated Dumbbell ends are made from ASTM A48 Class 20 grey iron, durable coating, and are joined together by a solid 1018 cold rolled steel chromed handle, providing a strong, long-lasting product.