Tie-down removal tool

[Avon1330]

Hi all

I would like to remove one of the shackles / mounting points on my T6.1

Any ideas what size tool I need? I think it's a TRX

Thanks

 

[Deaky]

I think its a M10 triple square spline XZN. Definitely not a TRX

 

[Paynewright]

It is a 12pointed bit - in an emergency an M8 allen key will fit