For anyone who has experience with the spacers that come with extended studs by Ichiba, are there different size extended studs for each size spacers?

For example, I have both 10mm and 20mm Ichiba V1 that both came with extended studs, but I did not get the chance to measure the studs before installing. Are they the same length, or does 20 mm have much longer studs?

Reason why I am asking, wondering If I have to press out the studs, or if I can just put my 10mm back on.