Burr with Ring is a clever assembly from award winning designer Hajime Katsumoto. It's a standard six piece burr with the addition of six rings, each fixed to the end of one of the burr sticks. The final assembly is nearly cubic, and with a level 5.5.4 solution it's challenging but doable.
Construction of this puzzle is sublime; tolerances are dead on and the finish is beautiful. This one really turned out well.
49 copies made for sale, each signed and dated. This puzzle is shipped assembled.