Filament holder - 50+mm reel holder (part 2)

Having got a 3rd different centre-hole-sized filament reel this week, I decided to create a simple quick-change holder for my Lulzbot AO-101.

This part is the 50+mm reel holder. It slides over the bolt end (part 1) and is a snug fit.

Links to the other sections here:
main bolt end: http://www.thingiverse.com/thing:172267
73+mm reel holder: http://www.thingiverse.com/thing:172271
31+mm reel holder: http://www.thingiverse.com/thing:172273

Printed on my Lulzbot AO-101 modified to go up to 160mm.
pt5 nzl using slic3r, pt25 layers & custom perimeter extrusion width pt49mm