One of the selling points of the ironmaster dumbbells is that they can be dropped and not break, unlike the powertec and bowflex.

Is this just a precautionary thing meaning "if you accidentally drop one every once in awhile, it's not going to tear up your set" or can they be dropped regularly and purposefully and not break even after a repreated beating over several years?

I'm looking for a dumbbell set that I can do dumbbell olympic lifts with where the weights are dropped back to the floor (dumbbell clean and jerk, etc).