75mm standard fittment. From a bloke whose selling them in our local forum. I suppose they are coming from Sweden, so they might Volvo related. On the other hand the blokes nick was BMW-something. So basicly, I have no clue whatsoever. The flow is not far from the greens, that is 390-400cc/min depending of the source of information. I'm just changing because I needed a second set of injectors (old ones go to my Escort), they are new, good price and they are four hole type injectors. Also the 16 Ohm impedance is much easier for the flyback circuitry.