At which phase of meiosis does the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids?

At metaphase II the chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids.
Whereas in metaphase I the microtubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes.