PowerBlock Pro EXP Stage 3 Add On KitDesigned for efficient muscle building and advanced heavy duty workouts, the PowerBlock Pro EXP Stage 3 add on kit is the last PowerBlock expansion that increases the weight load to another 70lbs or 90lbs (31. 7kg or 40. 8kg) per hand with 6 added weight increments. The add on work seamlessly with the Stage 1 and 2, and it simply provides more workout possibilities for the veterans of weightlifting. The EXP stage 3 like the other stages of this