Windows batch - for loop delete files

@echo off
set dir="c:\Backup-upload\"
for /R %dir% %%f in (*.7z *.gpg) do (
del %%f )
pause
exit

What it does : This batch deletes all .7z and all .gpg (GNU PG) files in a folder using a
for-loop. Instead of 7z and gpg other file formats can be put there.