Long Roles for Prusa i3 MK1 & MK2 Spool Holder V3

I added two about 105mm long rolls and the needed screws. The advantage like this is that you can pop in different spools without needing to adjust the distance in between the left and right holder. This is no new invention, but I just wanted to have it like I wished ;-)

You need the two holders and four 608 bearings as described in the original part:
http://www.thingiverse.com/thing:1768975

Screws made with this tool:
http://www.thingiverse.com/thing:193647

Thanks for the original pa