I have be use this dumbbell set for several month now , along with some more standard dumbbell and a Bowflex weight bench . while I prefer the feel of standard dumbbell , this set be very compact to store and it be very easy to adjust the weight for specific exercize . I feel that they give I just as good a workout as any dumbbell I have use , even if they be a bit too bulky to use for wrist curl and other short range of motion exercize . for the standard bicep curl , bench press , overhead press and the like , I highly reccomend .