Peg Board Filament Spool Arm

This is the latest evolution in my quest for a filament spool storage system using peg board. There are two versions of the holder here, one for the narrow filament spool and the other for the wider filament spools.
I have set up a peg board that is approximately 5 feet wide by 2 feet tall. With this board surface I can attach twenty spools of filament in two rows of 7 spools separated by a row of 6 spools. The system only extends the slightly more than the width of the spool from the surface o