Maybe the best solution for home for those who don't want the screw-on ones. They change quickly and unlike many adjustable dumbbells, they maintain a conventional dumbbell shape in all sizes.

I give it a 4/5 because they are fragile, as others say, and because they are an imitation of NÜOBELL, they don't have the same quality.

I searched a lot and ended up here..
Positives:
A very good space-saving solution
The fastest weight change for adjustable dumbbells
Nice handle.
With all the weights you use, it feels like you have regular dumbbells and not like other adjustable ones that carry the volume of a 25kg dumbbell at 4kg.

Negatives:
Relatively fragile like all adjustable dumbbells. According to the manufacturer, they are not for falls from height. Only for training with strict technique and movement control.

Overall: In the first month as an owner, I find it a good solution and with the necessary attention they will last quite a while. They have a 2-year warranty. Much better price (at €600) than buying all pairs from 4 to 32kg.
So, for now, it's fine and if I see any issues, I will come back with a new review.
I hope I helped