I installed this bushing kit on a Holley 3110 to accommodate the large hole in the carburetor linkage with the mechanical throttle linkage on my '59 GMC. The case is very high quality and made in America. I had to grind about .020 on one side of the bushing to position the linkage properly, but that's more down to my linkage setup, not the bushing. The anodized finish looks nice and should offer some corrosion resistance. Good quality item.