Customize your planner, create additional planners, notebooks and so much more with the Create 365 Happy Planner Expander Rings-Gold Classic. Expander discs will give you some extra room for all the goodies you are adding to your planner. Easy to use, these discs are compatible with all Happy Planner accessories. Each disc has a heart in the center for a little extra happiness. This pack includes nine discs that measure .75 inches.