This polyurethane dumbbell is constructed from alloy steel, which is meticulously pressed into each solid steel head and then welded externally for maximum strength. This design prevents damage and eliminates the need for secondary maintenance. Unlike adjustable dumbbells, this fixed-weight dumbbell is convenient you dont have to spend time placing them back into a holder. Plus, theres no risk of them coming loose during your workout, ensuring stable and safe exercise.Here are the key features of this polyurethane dumbbell:Polyurethane Layer: The heads are wrapped with an 8mm polyurethane layer, providing shock absorption and impact resistance. This layer also protects the floor and surrounding equipment.Grip Design: The surface of the grip features a medium-level knurling design, enhancing both grip and comfort.Even if your palms get sweaty during exercise, you can still firmly hold these dumbbells.Hard Chrome Treatment: The dumbbell undergoes a hard chrome treatment, which not only adds to its aesthetics but also makes it corrosion-resistant.Durability: These dumbbells are durable and suitable for both commercial and household use.Whether youre working out at the gym or in the comfort of your home, these polyurethane dumbbells are a reliable choice for your fitness routine!SPECIFICATIONS Color Black Material solid steel head, wrapped in polyurethane layer Weight range 10-30kg Grip length 892mm Grip diameter 32.5mm