The PowerDyne Adjustable Dumbbell Set includes 2 dumbbells: the essential heavy-duty weight equipment to sculpt and tone muscles throughout the body. Increase your strength with 2 sets of 10 adjustable iron weight plates that increment from 5lbs up to 80lbs each. Securely lift a total of 160lbs with no-slip grip handles. To increase the dumbbell weight, unlock, adjust the pin boxes, align to the desired weight, then secure back into place. The compact design features 2 sturdy and secure 18x9x9inch storage trays.