This is a simple one. I wanted to replace my New Astro City control panel locks with thumb locks. Standard US stuff comes in imperial lengths. 5/8" was too short and 7/8" was too long. I probably could have looked for 3/4" but I already had a bunch of 7/8" ones. So I made a little spacer to make it fit. Is it the greatest looking thing in the world? Not really, but whos looking under there anyway.