These dumbbells are great for the beginner home gym junkie. By turning a dial, the weight is set and a great workout can follow. With great grip, it is near impossible to drop the weights. Plus, it allows you to have a wide variety of weights in a small place. It replaces a total of 34 weights.
If that doesn't sound good enough, it has a 2-year limited warranty on all parts, 5-year warranty on weight plates, and a 1-year warranty on labor.
The only problem with this is that it only goes between 10lbs. and 90lbs. which makes it impossible for the body builder type to get in a great workout.
I have been using these weights for about a year now and have had nothing but sucess with them. I recommend them fully for anyone who wants to have a home gym without tons of equiptment.