yup, got them on my Fireline, were previously on my trek superfly al. Love them, stiff, adaptable previously had them as a 2x setup, now on a single ring setup, lovely to install, the pretension lockring makes things nice and simple.
And … lifetime warranty… had a friend whose square taper ones broke after over 10 years on various bikes including DH and polo rigs… they asked for a photo and dispatched a new set the next day. Awesome service, great cranks!
Also got mine from activesport, no troubles with the service there