Spool holder for Prusa i3 with 7mm thick metal frame

Remixed from http://www.thingiverse.com/thing:68329
Exact same design, I increased the gap of the holder support to fit a 7mm thick metal frame

I've added some useful spool holder clips that fit 1kg spools from 3 vendors (makerbot, prototype supply and shaxon)
they are all a remix of http://www.thingiverse.com/thing:596838