I'm trying to remove my uprated front brake calipers (420R), they are loctited in place with 2 star headed bolts. I purchased a star socket set from Halfords today, and set to it - the E12 socket kind of fits, but its chewing up the bolt head, so I don't think it is the correct socket type. The bolt head has a couple of markings - "10.9" and , I think, "BC".
From reading it appears there are "Torx" and "Torx plus" standards - not sure this is relevant, does anyone know what socket I need to get a proper purchase on these??