Since no direct information is available regarding the content of this specific item, here is a general guide on how to locate and understand such identifiers: Understanding the Identifier
From a technical standpoint, HEYZO and similar platforms (like 1pondo or Caribbeancom) sometimes split files due to limitations in older download managers or to allow users with slow connections to download content in manageable chunks. "Part 1" allows a user to start watching immediately while "Part 2" downloads in the background. heyzo heyzo-0107 part1