Race Face Next LP carbon cranks with rings. Yes, they're ISIS. Sorry!
On the other hand it's a new-ish SKF ISIS, one of the much later ones with no bearing issues, not like the early ones.
Cranks are worn, scuffed etc as can be seen from the pics but they're very stiff, the rings are pretty new and there's loads of life left in them. Maybe not on a "best" bike but good nonetheless. Bit of black paint (or sanding them down to silver) and they'll look a lot better!
Cranks are 175mm, the rings are 22, 32, 44 black Race Face, 5-bolt.
£70 posted for the lot and considering that the rings on their own are about that price it's a pretty good deal.