I used these for the idler wheels on a 93 inch Caroni mower. The seller asked $13 for each of the two bearings used in the same pulley. I removed the seal on one of the new bearings and there was grease in it. The fit seemed fine, but I didn't "mic" anything, it just felt like it. It's a pretty heavy burden for these little camps and if I live in them for 5 years I'd say they're worth it. , I now only have about 2 hours left (21.05).