An auxiliary equipment for weights and fitness exercises in dumbbell English. It’s smaller than a barbell. Light dumbbells weigh 6, 8, 12, 16 pounds(1 pound = 0.4536 kg) and so on. Heavy dumbbells weigh 10, 15, 20, 25, 30 kilograms and so on. Therefore, it is favored by the majority of fitness enthusiasts. Because there is no sound during practice, name dumbbell.