[slotloco]

I just had a sqizz at that Pendleslot chart, some useful information but on my reckoning, their summary of axle sizes at top is incorrect from my experience
Copying from their page, I have put some data in red at the side, based on my experience with these makers.

Cartrix - 2.4mm    2.48
Ninco  - 2.46mm   2.45 -  2.46
NSR - 2.37mm      2.37
Policar                   2.38
Scalextric - 2.35mm  Not sure what they are measuring as there are splined and smooth
ScaleAuto              2.38
SCX - 2.4mm        2.48
Sideways              2.38
Slot.it - 2.38mm    2.38
Spirit - 2.44mm     2.40
Thunderslot           2.38

Sideways compatibility with Slot.it is well known, But not everyone knows that the ScaleAuto gimbal bushes are inter-changeable with the Slot.it ones, and thus, so are their axles and wheels. - Which is also nice if you want to fit any of the ScaleAuto nice mag wheels to a Slot.it GT