Hi all, this bank holiday I will be replacing discs and pads all round on 2019 L405 AB 4.4 so I am trying to make sure I have everything that I need up front. I have bought all the parts and didn't pay much attention to the rear calliper bolts and the shape of the head of the bolt, see here;

SYG000013 Bolt M12

So I am thinking that my existing socket set, limited in scope as it is, does not contain an appropriate socket for this head and I suspect that it is quite critical that the correct one is used due to how tight these bolts are likely to be.

So my question is what is that type of socket called, is it 'Torx' or similar? What size socket would it be? Should I get an impact socket for it? And could anyone recommend where I could buy such a socket set once I know what it is called? [/url]

It's a 12 point head, so if your set has standard 12 point sockets in the correct size, you already have the correct tool. 2012 (L322) 4.4TDV8 Vogue SE, RSE, Fuji White over Arabica.
Previous V8s: BMW 645Ci, P38 4.6, P38 4.0, Merc CL500
Previous others: Honda x1, Volvo x7, Rover x6, BMW x6, Ford x1, Mercedes x2, Skoda x3, VW x2, Renault x2, Citroen x1, Mazda x3, Nissan x1, Audi x3, Kia x1, Fiat x4, Subaru x3, Austin x2, Triumph x2, Jeep x2, Hyundai x2, Lexus x1, Mitsubishi x1, Saab x2... and some others I've forgotten!

Thanks for replying, I will have to go and dig through what I have got but I dont remember seeing a 12 point socket. It's a shame because I had pretty much every tool for any job on my car at the time before I got rid of everything when I moved and decided I no longer wanted to work on cars, didn't think I would need to scratch that itch again!