I have type II Diabetes, and my physician suggested I use weight training to help me maintain my health. There were no weights I could find that fit my needs, since most were too cumbersome, or too expensive. Then I tried the SelectTech 552 Dumbells. I've used them for 6 weeks, and I am amazed at the results! My weight is down to my college days, my energy is fantastic, I can see the results in the mirror, and my blood sugars are perfect. This product delivers everything as advertised. The most expensive weights you can buy are the ones you don't use. You will never have that problem with the SelectTech Dumbells! They are an absolute joy to use.