Well I figured as much that it's available from ebay and that the RIBE tool probably is the right kind, but that still doesn't help me with what size to get since there's m10 m11 m12 and m13.
Visited my local fiat shop, and once again with out success. And just when I thought "there's always ebay" I made one last stop at my local hardware store and they had all sizes of ribe tools, SCORE!