Each end weight set contains four add-on weights (two pair) to be added to 1-lb. Heavyhands® handles. By purchasing additional add-on weights seperately you can create various increments of weight. 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. Example: 1 lb. handle + 2 lb add-on weights = 2 2lb handles.