For use with the Pro 100 EXP adjustable dumbbell. Sold in pairs, this expansion kit contains two 10-pound additional weights per dumbbell to take your Pro 100 EXP up to 100 pounds. You will need the original Pro 100 EXP set, plus the Stage 2 and Stage 3 Expansion Kit before adding Stage 4 to your adjustable dumbbell.
 
Pro 100 Expansions
Expand your PRO 100 EXP adjustable dumbbells to 100 pounds with compatible expansion kits. Start with a Stage 2 Kit, then add Stages 3 & 4 to reach 100 pounds.
All Expansions are sold as pairs to add 20 pounds to each dumbbell.