's a cool product and I enjoy it, however, the turning mechanism is not very smooth. I disassembled it to adjust all the piece screws; I conducted numerous tests, and it turned perfectly, but upon reassembling the center piece caps, the loud grinding noise returned. As an analogy, it's as if the pieces are jamming. Nevertheless, I would recommend it.

I like it!. Nice and smooth turning. Well built quality. Quite fun to solve and it is not as hard as i expect it to be!. Not that much of challenge in term if new solving experience. More than happy to have this cube in MyCollection. J2018