What do they mean a DIY RUBIK'S?.
I know it is fast. What kind of rubx is it?
How do it differ from other rubix in a toys store?
Thanks for your time:)

It is shape oriented, rather than colour. Commonly called blind man's rubix, or to be solved in the dark.

Ohwww...
I thought it is the fastest kind of rubik's. OK... thank you for that info...