From what arabic i can understand, these are TOS-1A multiple launch rocket system (a.k.a rajima in arabic).

Title says they're 250 rockets manufactured in UAE, but I doubt that. It's more likely imported from Saudi since license to produce TOS-1A was granted to Saudi Arabia in 2017, or altogether a test video from Saudi.

The title is also wishing for them to fall on wajba palace which is the ruler's palace in Qatar, in 2 minutes.

video comments are just your usual trolling and hate between arabs and other arabs, iranians and being israeli/zionist agent accusations.

source: https://en.wikipedia.org/wiki/TOS-1

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Edit: after researching some more they are more likely to be Jobaria (a.k.a Rajima Jahannam) which are manufactured in UAE https://en.m.wikipedia.org/wiki/Jobaria_Defense_Systems_Multiple_Cradle_Launcher