20Pcs/Lot A4 File PVC Plastic Binder Aprons 21 Rings 20-80 Sheets Loose-Leaf Notebook Comb Binding Machine Office School Supplie 20Pcs/Lot A4 File PVC Plastic Binder Aprons 21 Rings 20-80 Sheets Loose-Leaf Notebook Comb Binding Machine Office School Supplie. Sale price : $4.55 Category : Office & School Supplies