Names are hard

Also the cane creek 40 1 1/8 inch headset aslo seams to have 45/45 degree bearing angles but again I'm not sure.

Thanks David I measured the headset and both ends are 1 1/8 inch. I looked around for a headset that would fit and I found the campagnolo record hidden 1 1/8 inch headset, would this fit my frame or have I missed something?

Yeah, I found that post but the links for the headsets were either not still around or out of sale. Do you know what size they were?

I have recently bought a Scott addict R2 frame and some new carbon forks but I can't work out which headset will fit. Ideally I would like a cane creek 40 series but I have looked at the sizing and I have no idea. If cane creek don't fit something around that price range is great. I attached the sizing of the forks.

I have decided to build my own bike and I have just bought a Scott addict R2 frame but I cannot work out which headset I should buy. If somebody could explain the sizing to me or tell me which headsets would fit that would be great!