Heavyhands Add-on Weights The heavyhands 3-lb Add-on Weight Set screw on to the 1 lb heavyhands handle to create 2 3-lb. heavyhands handles heavyhands adjustable hand weight system allows you to easily customize your workout by varying use of your add-on end weights, so you burn more fat and build more lean muscle. heavyhands is the premier hand held exercise system! Comes with a full instruction booklet!