Wall mount spool holder

After looking for a spool holder that fit our specs:
-Easily change one spool at a time
-Fully printable
-Strong enough for commercial use
We decided to design our own.
Will be adding a center arm that will allow 2 spools to interface thus forgoing the requirement to print 2 arms for each holder.
These have been weight tested to 50lbs installed in concrete block with tap-con screws.
Completely overbuilt, with repeted use in mind.
Tested with Makerbot spools and DeltaMaker Spools.
Feel free to comment good or bad.
Happy printing :)
-S&G Design