Designed 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 adjustable dumbbell set, provides the same functionality and quality with open handle design, as well as the weight selector pin to ensure swift and effortless weight customisation. The added weight expansion is supplied as a pair.