How do I desn the Yoyo axle slot?

yoyo slotYoYo Slots is an on earning app that combines entertainment with financial benefits. Users can earn money by playing different types of slot games, which are available within the app. To get started, players need to make a minimumSo, I have absolutely no idea on how to desn the yoyo axle for my yoyo and I am trying to put in a YYF 10mm axle inside.