10x10x100 Sq Rod for Prusa i3 Spool holder for 6mm & 8mm frame

10 x 10 x 100 Square Rods for
Prusa i3 Spool holder for 6mm & 8mm frame
http://www.thingiverse.com/thing:485438

If you want more clearance try the Extended Slanted Bars:
http://www.thingiverse.com/thing:961548