Premium Construction & Durability: This 150lb(Pair of 5, 10, 15, 20, 25 lb) dumbbell set made from solid cast iron and encased in high-quality virgin rubber, these dumbbells resist cracking, fading, and protect both floors and equipment. Enhanced Grip Safety: Non-Slip handle design ensure secure and comfortable grip, providing increased friction for a more secure grip during exercises. This enhances safety and stability, especially during intense strength training sessions. Hexagonal Design for Stability: The hexagon-shaped heads provide stability and prevent rolling, ensuring safe and effortless workouts while offering convenient storage. This practical design makes them a reliable choice for fitness routine. Versatile Weight Options: Available in various weights, dumbbells 12 pounds and under feature a 28-millimeter handle diameter, while those 15 pounds and up come with a thicker 34-millimeter handle. This ensures a comfortable fit for all hand sizes and workout in