SPECIFICATION: 2x2kg / 2x2.5kg / 2x3kg / 2x4kg / 2x5kg / 2x10KG HEXAGON: The hexagonal design prevents rolling so that you can do a lot of finess movement in safer condition. MULTI-SCENARIO: Because of its small size, the product is easy to carry, and is suitable for home, gym or office exercise. Ideal for heavy-duty weightlifters and body builders. Will fit in home, gyms, clubs, studios, fitness classes. VERSATILE: Dumbbells offer the ability to target specific muscle groups or attain a full body workout, burn calories faster, increase endurance and strength, and you will benefit from a healthier body. Indoor/outdoor hand weights easy to store and perfect for travel. Will help you build muscle mass for cardio training. Weight visible on dumbbell heads. EXQUISITE DESIGN: The delicate knurl on the handles enhance essential grip and security during use. ERGONOMIC DESIGN: Comfortable hand grip. Easy to grip, nonslip and heavy enough for arm muscle workout. DURABLE MATERIAL: Selected cast iron dumbbells filled with concrete. The surface is coated with a fine black PVC covering to absorb impact and protect floor if it falls.