The Sport 2.4 equals/ replaces 8 pairs of dumbbells or 216 lbs of free weights. Weight range is 3-24 lbs per hand in 3 lb increments. Increments achieved are; 3, 6, 9, 12, 15, 18, 21, and 24 lbs per hand. The Sport 2.4 cannot be further expanded. Sport 2.4 value at $149/set- cost per lb on the Sport 2.4 (replaces 216 lbs) is 69¢. Compare to hex heads at 99¢ lb costing $213.84