This high-quality dumbbell set is made of concrete weight plates with a chrome finished bar. It comes with different sizes of weight plates so you can adjust it to the desirable weight. This weight plate set features 2 pairs of spinlock collars and a non-slip grip to provide you a safe and secure exercise experience. It is great for your upper body workouts . which helps tone and sculpt your arms . shoulders . back and strengthen muscles. With this dumbbell set . you can exercise at home . in the office or any place at any time. This 12-plate dumbbell set has a total weight of 20kg/44lb which can be easily adjusted with spinlock collars according to your training intensity. The adjustment weights of a single dumbbell range from 0.5kg/1lb (no plates attached) to 10kg/22lb (all the plates attached) . which is very easy to use even for fitness beginners. Enjoy having a complete weight set in your home gym!