Build muscle and tone your body with the IBF 25 lb. (11.34 kg) Adjustable Dumbbell Set from Iron Body Fitness. The 2 x 12.5 lb. (5.67 kg) dumbbells adjust with a simple turn of the handle in 2.5 lb. (1.3 kg) increments, from 2.5 (1.3 kg) to 12.5 lbs. (5.67 kg) each. Replace five sets of dumbbells with one! Ideal for home workouts, the easy-to-use set comes with a heavy-duty docking base for securely adjusting your weights and convenient storage.