13mm Black Binding Discs 1/2" Black Planner Discs for Discbound

13mm Black Binding Discs | 1/2" Black Planner Discs | For Discbound Planners Open package, but in great condition. Small black binding discs for those who prefer a classic look to their notebook or planner! These black plastic binding discs allow you to create your own discbound planner or discbound notebook (if you have your own disc binding punch) or to upgrade the discs in a notebook or planner that you may already have. With an inner diameter of 13mm and outer diameter of 18mm, these discs hold approximately 50 sheets (100 pages) of 120gsm premium paper (32lb).