It Should be a set of 8 special kaleidoscopic blocks; in reality it are too small 8 blocks in fun colors but with hardly any kaleidoscopic qualities - to orange block with a green spiral on, that's it; another one with a red plastic ruby in, but you can not look through it ... only 2 out of six Could be Considered as kaleidoscopic, but even Those not as great as They Could be.
As for the famous Haba build quality, some of the blocks have cracks in them, I guess cheap wood or cheap production process.