The RexO Cube is a 3D-printed puzzle from LimCube, the workshop behind FangShi's Mixup Skewb Prism. Each face of the 61 mm cube carries a round window with the petals and centre of a Rex Cube, and the frame around it is hollow, so the black printed inner sphere shows through as the puzzle is scrambled.

It is printed in PETG, a tough plastic that handles knocks better than brittle prints, and weighs about 157 g. Like LimCube's other designs it is a small-batch collector's puzzle rather than a speedcube, made for solvers who already know the Rex Cube and want a stranger take on it.

Features:

• LimCube 3D-printed collector puzzle
• Rex Cube petals inside round face windows
• PETG plastic, black body, stickered faces
• 61 mm, about 157 g