Planner Discs for Discbound Notebooks — Butterfly, Moon & Star

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Planner discs are the small rings that hold disc-bound planners and notebooks together, letting you rearrange, add, or remove pages anytime. Ours come in two sizes — 28mm and 32mm — with finishes from butterfly to moon to star, and work with popular systems like Happy Planner, TUL, and Levenger.

Which size do I need?

Measure the punched holes on a page you already own, or check your planner brand's spec sheet, then match it here. 28mm discs — Black Butterfly and Silver — fit most Happy Planner Classic and similar compact systems. 32mm discs — Black Star, Silver Star, Silver Crescent Moon, Bronze Butterfly, Red Butterfly, and our discounted Black Crescent Moon seconds — fit Happy Planner Big, TUL, Levenger Circa, and other larger-format systems.

Frequently asked questions

How do I know which disc size my planner uses? Check the punched holes on a page you already own against a ruler, or look up your planner brand's disc spec — most brands use one size across their whole line.

Can I mix disc sizes on one planner? No — every disc on a spine needs to match, or pages won't sit flush and the rings can slip loose.

What's the difference between butterfly, moon, and star? Just the decorative shape stamped into the disc — every size performs identically, so pick whichever style you like best.

Pair them with our sticker sheets and washi tape to build a planner that's fully your own.