Binder Planner OSAMU GOODS Osamu Goods 6-ring Mr. Donut Brown-toned Please refer to the photos for approximate dimensions. The distance between the centers of the holes is approximately 1.9cm. - This was originally a Mr. Donut planner, but can be used as a binder. - 7 address book pages are included as a bonus. - Convenient pockets on both inner sides for cards, business cards, and memo paper. It's well-made, so I think you can still use it for a long time.