cork

Hi all. I just made an account to see if someone could tell me if there is still someone out there who makes replacement calks like these. I assume these are replaceable? They are old Danner boots. Thanks.

Greetings - I joined this forum to ask this question of experienced tree people. This is a 50+ year old tree, probably 30-40' tall with an enormous canopy - probably 50'-60' in diameter. A big beautiful tree that has had this problem for the past 1.5 years. The cork has never been harvested, so...