I have used other EBC products and they seem to be of consistent quality with no iron dust. These were semi-synthetic pads from HH. They sit fairly quickly and brake more gently than sintered pads sometimes suggest. Organically smooth but doesn't hold up that well, at least that's what I'm told. For bikes I always use EBC and the HH semi-agglomerate seems to fit well. I have also used their EBC rotors on my bike and they are better than the OEM.