Merax Deluxe 55 Pounds Adjustable Dumbbell, 5-in-1 Dumbbell 15-55lb Adjustable Weight Plate for Home Gym 2 PCS $489.99 – $715.99 Make sure this fits by entering your model number. Each dumbbell adjust from 11 lbs to 71.5 lbs in 5.5 lb increments. With the unique dial system, you can rapidly switch from one exercise to the next.