Robust LM8UU Y holders

Adapted from Wired 1's LM8UU bearing holder (http://www.thingiverse.com/thing:30365) these are intended for Y axis bearings / to be bolted to the Y bed.
As per the original these are printed on their ends to make them strong so V1 needs support to print, whereas V2 can be printed without.
I got tired of the smaller versions breaking