Yeah, there seems to be some confusion about the difference between "firesteels" and "flint and steels."
Since some people call the old-fashioned strikealight kits "firesteels" and others call ferrocerium rods "firesteels" as well, new forum readers (or old ones, dunno?) often assume that ferro rods don't work with some steels, which of course is a complete falsehood. Haha.
I've even used old hacksaw blades, tin can lids, broken glass, and various flinty/cherty rocks to strike my ferro rod.
All you need is a sharp edge harder than the rod:)
PMZ