This is Tiled Crazy 4x4 cube, which made more then 10+y ago. The 6 circles will be all 1 when cut at the second layer, and if cut at the first layer, all them will be 0.
Brand Name: DY & MF8 Item Name: crazy 4x4 V2 Size: 6.2 cm N.Weight: 200.9 g Material: ABS Condition: 100% Brand new, old stock.
