I was a bit dubious about this, having normally only used Makita or DeWalt original parts, but I thought why not with the much lower price (given that I will only use it once in a blue moon).
Very happy with it. The fact that it is keyless is a great advantage over many of the OEM parts and the 13mm chuck lets me take slightly larger bits than the standard 10mm on cordless drills.
Seems good and strong, grips well, centres well and should last.
The only reason it didn't get 5 stars is that the feel of the plastic, and also the smoothness of turning the collar makes it feel a bit cheap, which it is, so I shouldn't be complaining. The rest of it, especially the knurled part is very good quality.