This is designed to help in the activities that promote body fitness and healthy living. For indoor/outdoor use, positive fitness results are guaranteed with or without supervision from a fitness trainer. Also recommended for professional and non-professional athletes. 20kg adjustable dumbbells for your weight lifting and muscle build to you fit. this dumbbells come in pair 10kg on each arms is detachable for your convenience. This set of dumbells comes handy with the best satisfaction you can possibly think of when considerable using dumbell for your work out. it is easy to assemble and because of its adjustment nature. you can either increase or reduce it according to your workout strength.