In the bottom layer of the box is the supplies and maintenance
tools kit.

Here we have a package of replacement felts, a bottle of ink, a rod
to clean the weep holes, a spare "well" and the mystery item. I'm
not sure what the plastic cylinder is for.

I couldn't find any indication that Stafford still exists.
I thought it strange that there were no installation instructions or
"operators manual". I guess that saves the labor needed to pitch
them without reading. Or the time to read them if some bone head
actually decided to do so.
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You said "tomorrow" yesterday.
The above comments or recommendations are SWAG. Use at your own risk.
John, W9DDD