Can I install C-Serts in hardened steels?Yes, but only up to around 34RC.By Carl Strom|2021-01-26T13:07:21-08:00November 4th, 2020|C-Sert System|Comments Off on Can I install C-Serts in hardened steels?Share This Story, Choose Your Platform!FacebookXRedditLinkedInTumblrPinterestVkEmail About the Author: Carl Strom