: LZMA/LZMA2, known for high compression ratios and strong AES-256 encryption support.

: Used by DIY 3D printer builders to manufacture or assemble the extrusion head of a printer. 2. Video Game Modding (Skyrim & Fallout)

In the context of the or Wabbajack automated installers, files named with version strings like 2-1.7z are common. Examples :

: Versions of Dynamic Distant Objects LOD often use similar naming for supplemental patch files.

: A popular commercial alternative that supports extraction of 7z files.

: Archive files like 2K Textures-13578-2-1.7z are used to distribute high-resolution visual upgrades for Skyrim Special Edition . 3. Software Development