Helicopter Cube 4x4 This is a very controllable

This is a very controllable cube

AoChuang and Huchuang is already highly regarded for its performance but this cube takes it a step further

Dimension 4x4 or CiYuan 4x4 is a  Stickerless 4x4 with square frame on every face of every edges

A nice addition to a classic mod 3x3

This is a high quality Megaminx with curvy cutting

Helicopter Cube 4x4 This is a very controllableHelicopter cube is an edge turning puzzle and has a interesting twist to it as the cube the pieces can jumble when 2 adjacent edges are turned at a certain angle. The puzzle was invented by Adam Cowan in 2006. Independent from Adam Cowan, another famous inventor Katsuhiko Okamoto created his own variant of this puzzle under the name "Bevel Cube". This is the Japanese color scheme version of the puzzle