Because the data is spread across multiple files, you cannot simply double-click the .001 file using standard operating system tools, which often fail to recognize the sequence.

Ensure all related files (e.g., kdmvarset.zip.001 , kdmvarset.zip.002 , up to the final part) are in the same folder .

Standard macOS utilities cannot handle split ZIPs; instead, use tools like The Unarchiver or Keka .

Are you having trouble finding the of this specific set, or are you getting an error message when you try to open it? How to Open and Extract .001 Files - Microsoft Q&A

7-Zip is the most highly recommended tool for this format. You can right-click the .001 file, select "7-Zip," and choose "Extract Files".

If all parts are present but extraction fails, one of the segments may have been corrupted during download. Many users use tools like QuickPar to verify file integrity if parity (.par) files were provided by the uploader.