>>9909114The quality of NBK's varies by batch, I bought the boxset version and many of the parts look like they were twisted off the runners, with a lot of flash on some. Spent a whole day fixing it. The combined mode somehow holds together well despite not having any big ratchets, just a tad wobbly. Still it's better for messing around in individual modes.
Don't have the Jinbao oversized one but heard it's ok.
Also if you're looking for the 1:1 KO interchangeable with NBK's combiner joints, that's by Daban.