If I remember correctly, those are head direct biflange with a spacer. But I don't use those tips any more. I prefer the sensorcom tips. The give better treble response. However, those black tips gave more space and air to the sound.
Recently acquired the Sony EX600, and they sound nice, but it looks like my SM3 still have the crown of my best IEM (RE--252, IE8, EX600 and SM3). The EX600 are too new to say for sure, however.