Weird Screw to Remove Left Side Mirror

the first picture is the actual screw but it have only 5 point star and the right is a screw that is similar but 6 point.
here is the damage.. it will be helpful i can have your opinion what i should do.
Thanks!



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M-B used to use standard T20 torx screws for the mirrors for years...........then they switched to the special tamperproof 6 point torx(probably because of all the a-holes stealing M-B mirrors for their Honduhs)..........and now they have switched back to standard torx screws. You can buy the M-B "special tool" torx bit from the dealer for about $12 retail.
I'm talking about the plasticy part in the front of the side-view mirrors, and not the mirror itself.
Mine is cracked on the drivers side, and I'd like to have it replaced before I have it tinted

Thanks
When I open my drivers door, theres 2 screws that holds one of the hinges and it looks like its "inside out" compared to this one.
Just curious, thanks!
Or, you can carefully drill out nipple at the center. Once that is removed, then you can just use the regular Torx bit.
I thought a regular 12mm wrench works on holding/removing them?
I believe they're called "inverted torx" screws/nuts.
Or at least that's what I read from the Sway-Bar DIY thread








