The 5kg to 30kg rubber hex dumbbell set includes 9 pairs of dumbbells designed to help you develop strength, increase muscle growth, as well as to strengthen the bones, muscles, and connective tissue. It includes 2 x 5kg (11lbs), 2 x 7kg (15.4lbs), 2 x 10kg (22lbs), 2 x 12.5kg (27.5lbs), 2 x 15kg (33lbs), 2 x 17.5kg (38.5lbs), 2 x 20kg (44lbs), 2 x 25kg (55lbs), and 2 x 30kg (66lbs) dumbbells. These tough and durable dumbbells have a heavy-duty construction making them suitable for use in home and light commercial environments. A hexagonal head with flat sides prevents the dumbbells from rolling away and provides added safety during workouts, whilst a knurled, ergonomically designed steel handle guarantees a secure, anti-slip grip. The robust pinned, cast iron head is coated with rubber to protect the floor from damage and reduce the volume of impact sound.