YYF Hub Stack Kit W/ Bearings

YoYoFactory's Hub Stack technology opens a whole new world of pull starts, unique grinds, and allows you to grab your yo-yo while spinning and hold it in your hand!

This kit includes everything you need to add hubstacks to your hubstack compatable yoyos. 2 size A Bearings, 2 hub stacks, and 2 o-rings.