Customizable Wire rack spool holder

Another extendsion of my customizable wire rack clip(http://www.thingiverse.com/thing:1409228)

Default settings are for the 5th gen makerbot spools

EDIT had to shave off the edges of the lip that holds the spool on so it would fit through the hole
EDIT2: moved the flex notch to the bottom it wouldn't break when putting it on the rack