Powerblock Elite EXP Stage 2 Add On KitThe Powerblock Elite EXP Stage 2 add on kit lets you expand your Elite EXP Stage 1 adjustable dumbbells from 50lbs (22. 7kg) to 70lbs (31. 7kg) per hand as you get stronger. This practical expansion kit lets you elevate your strength training sessions and adds 6 additional increments to the 50lbs set for greater challenge and variety. The kit offers a robust, yet compact design to allow for space saving storage after exercising. This solid and durable