The best you can find at this weight and price. About 3 months of use, and they’re still like new. Good, sturdy construction, of course for the price you pay (and we all know how expensive weights are). The nuts do come loose, but not to the point where the weights will fall on your head. Still, it’s a good idea to check them before every set.

VFM. Of course, it's not a professional set, but having 30kg at such a price is wonderful. As others have said, the bar that connects the dumbbells seems a bit fragile, and the screw nut takes a bit of time to change weights constantly. But otherwise, it is very good both in appearance and in use.

If you screw the nuts on backwards, as in the photo, they won’t come loose on their own!
The dumbbells are quite bulky. The plastic is pretty good; you have to set them down on the floor carefully, because otherwise the seams might open. The bar is almost useless. I bought 2 extra bars from a Chinese marketplace and now I have two 9.5 kg dumbbells and two 6 kg ones. You can definitely do a lot of exercises.
Update: after almost a year of daily use, I haven’t had any issues. I’ve bought four additional 5 kg plates and use them with the dumbbells. Overall, they are the ultimate value for money.

It is good for home workouts, but it is not made from very good materials, so it requires attention.

After a few months, the plastic connector came off and I almost got injured. Just when I was about to give up, one side remained on my left hand and my hand slipped back.

In general, I am satisfied. Nice and comfortable grip. I bought it more for the discs rather than needing a bar - although having heavier dumbbells serves me well. It is annoying to put on and take off, and in a family of 4 we do it often. However, okay, I expected that. What concerns me is that in the long run, I don't believe the (type) clamps will hold. Already, sometimes, they loosen a bit.

value for money choice!

update: 1) very good for the job they promise, 2) accept Φ28 discs, 3) durable over time (storage in an outdoor space).

It does its job... but:

1) They can unscrew on their own! No matter how tight you screw them, the discs may unscrew and come off! (the skullcrushers exercise... almost became a reality!)

2) It is slow to tighten, especially if you need to change discs frequently (of course, I have no experience with other dumbbells, if the "clamp" comes off/goes on faster in others)

3) Sometimes the clamp gets stuck and doesn't come off at all... at least you work out your wrists

It was purchased for my brother to use, he has had it for three months and he is very satisfied. Overall, it serves him well for moderate use. His only complaint is that it takes a little time to screw and unscrew the discs. For its price, it is very good and it is easily stored without taking up much space.