1" post adapter to 2" swivel caster (for commonly available wire shelf with 1" round uprights)

I wanted to put caster wheels on one of my shelves and didn't like the options I found locally for casters with a 1/4" threaded post (which would have been a lot easier). I designed these to adapt a 2" swivel caster to the 1" (25.6mm) legs of my shelf. For reference the casters I modeled for were Strongway 2" non-marking rubber swivel casters (with and without brake) purchased from Northern Tool. The screw holes in the adapter are 3.1mm which are a good pilot hole for a #8 x 1/2" wood or sheet m