Dial adjustment system allows you to change weight in 2.5-lb increments up to 25 lbs. Between 25 lbs - 50 lbs, you can adjust the weight resistance in 5-lb increments, and then the last weight setting only increases by 2.5 lbs.
Dial adjustment system allows you to change weight in 5-lb increment from 10 - 90 lbs.
Dumbbells are available in the following weights: 1, 2, 3, 5, 8, 10, 12, 15, 20, 25, 50, 35, 40, 45 and 50. (While not listed on the CAP Barbell website, Amazon has 55 and 60 pound weights as well.)