I RECEIVED THIS SET TODAY AND UPON INSPECTION, WAS MISSING 2-5LB PLATES. THE BOX WAS VERY WORN WHEN DELIVERED. SOME OF THE PLATES LOOKED AS IF THE POWDER WAS LEAKING OUT. I AM VERY DISAPPOINTED

I have been using these for over a year, and they seem very durable. However, take note that I do take care of them (i.e. I do not drop them onto the ground from high above; instead, I gently lower my hands to the ground before dropping them no more than 4-5 inches off the ground on in-door carpet). They do seem like they can be dropped on concrete just fine too though.

These seem to be constructed well on the outside, but the durability may vary from one set to another because the weights have some kind of powder in them, and a (in my case, well-constructed) plug keeps the powder in.

The clips work well. There are 6 total. Two of the clips are (barely) bigger (but bigger nonetheless) and very strong. These two clips do not slip at all handling the heaviest of weights on this weight set. I use these two clips on one dumbell handle. The other 4 clips are not as strong, but works about as well as the two larger ones when combined. I use 2 of these clips on each side (4 total) of the other dumbbell handle.