IJOY Combo RDTA – What is the coils it comes with?

Hi all,

Recently gone and bought myself an IJOY Combo RDTA, Which seem's like a very nice upgrade from the Limitless PLUS.

One thing that's got me confused though is the free pair of coils they give you, Currently I'm using it and coming up at 0.14 ohm and pushing 140w so far, but what I'm more interested in knowing is what wattage limitation and what metal it actually is.

Thanks in advance if anyone knows, Could have sworn it wasnt written on the box but my own fault for lobbing it so soon.