2x2 Curvy Octagonal prism

Bom bonito bem lubrificado mas o giro do meio é muito difícil de fazer

Beautiful and unique puzzle. Unfortunately, turning through the center layer requires a little effort because all rectangular faces have to be aligned perfectly. Once you get the hang of how to hold/adjust the puzzle to turn this center layer easier, it is an interesting (but medium length) solve.

Despite being lubed to within an inch of its life on arrival it will not turn both ways through the middle section. It will only turn in one direction which is going to make solving it an absolute pain.

There's very little reason for it to have this design flaw, it should've been corrected before being released for sale.