This is a replica of the "Plus Plus" concept. I don't actually own any Plus Plus parts. Just made them out from memory and pictures... :)If There are tow versions of the concept here, one that is 10x10x10mm and one that is 5x5x5mm. The choise is yours. :) Print and play! Here is the originals: http://www.toyella.com/toys/plus-plus?gclid=CNiqo7uz0LkCFSx7cAod5HIAMw