I bought these over 15 years ago and despite all of the plastic, they are still in good shape. Adjustable dumbbells have come a long way since I purchased them so while these have served me well, I certainly wouldn't recommend buying them today as there are just too many better options available. Not much to say about these that hasn't been said a million times, they offer a good weight range with 10lb starting weight and 5lb increments up to 90lbs. They adjust very quickly but you do need to spin dials on both sides. Reracking into the cradle can take some effort as they need to more or less go straight down to prevent binding. The big drawback of this style of dumbbell is the size of the dumbbell remains fixed no matter what weight you've selected so the 10lbs are the same size as 90lbs. The only other issue is that some weight selections can feel imbalanced. For example, when you select 40lbs, the 2 innermost plates are loaded, and it makes the dumbbell feel much different than if you bump up to 45 where it adds weights to the outside edges giving it a much more balanced and natural feel.
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