Latching C-Clip Size

[Rockergage]

Trying to finish up this build but throughout the chaos it appears i have lost the C-Clip and don't know what size to buy to replace it, anyone know what size to buy?

 

[adrock42]

I've seen full circles at both home depot and harbor freight that might fit the bill if you cut em in half. I'm not taking that thing off unless I have to