PowerBlock Elite EXP Stage 2 Kit offers the versatility of expanding the Elite EXP 50 lb dumbbell to 70 lbs, adding an additional 6 increments to the 50 lb dumbbell. 70 lb dumbbell will now replace 14 dumbbells or over 1200 lbs of free weights in the space of 1 dumbbell, enough weight for even the most demanding weight training enthusiasts. Built to last with powder-coat painted steel weight plates and carries a 5 year limited home use warranty. Sold as a pair (2) and ships in 1 box. Note: will only work with PowerBlock EXP Dumbbell (2020 model).