hello everyone
I just recently a second hand Cervelo P5x and I want to put it on kurt kenetic trainer this fall. I did have a wahoo kickr in the past but was not a fan of it so im back to just a normal trainer.

I have been looking for the right axle to use but Im not quite sure which one is the right one as I just learned theres different kinds of threading.
Can somebody recommend what they use? And where they got it from. Thank you