.tk2 is Roxio/Take Two backup
Key Features: .TK2 File Extension
What is an .TK2 file?
Old application, Easy CD Creator is no longer developed. This program was designed to back up hard drive at all. It abled user to backup his data to CD-R. Files with tk2 file extension were used to create an image of the entire hard drive.
This tk2 file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.