Seat belt removal tool?


New Member
Hi all.

I’ve managed to destroy the plastic case on the ‘receiver’ on the rear middle seat belt on my E70 (the bit the belt clips into). I’ve sourced a replacement easily enough but removing the existing one requires a tool I haven’t got - one side is a standard bolt (looks like around 10mm) but the other looks like a large Torx.
I found this video on an E90 where he has one:
but he doesn’t say what it is!
Anyone have an idea if it is Torx and what size it is, please? I don’t really want to buy a full set of Torx I never use again if I can avoid it!