If you are looking for a "piece" or guide on how to handle these specific files, How Multi-Part RAR Files Work

: If the site you are using has a broken link for Part 6, you cannot "mix and match" from different websites. A Part 6 from "Site A" will almost never work with Parts 1-5 from "Site B" because the compression settings and split points will be different.

: These files are often bundled with "cracks" that antivirus programs flag as "Trojans" or "Riskware."