How extract RAR parts using 7.Z ( Win rar can also be used)
- Select the multiple RAR files (in Windows hold ‘Ctrl’ and click each part RAR file required)
- Click the ‘Alternate’ button on your mouse
- Under the ‘7-Zip’ menu select ‘Extract Here’ or ‘Extract files…
https://www.organicweb.com.au/9612/general-technology/merge-rar-compression/
