11/30Pcs 28mm Mushroom Hole Binding Rings Plastic Sheets Loose-leaf Notebooks Binder Ring Planner Rings Discbound Planner
https://www.vogueparade.com/shopping/EN/100003129/1/1005003451736226/1130pcs-28mm-mushroom-hole-binding-rings-plastic-sheets-loose-leaf-notebooks-binder-ring-planner-rings-discbound-planner//