Shuokecrafts 2Pcs Metal Standard Letter Size Notebook 3-Ring Binder Mechanism Replacement Kit,3 O Rings,Loose Leaf Binding Spines Combs For Personal

26mm Base Width Binder Rings Shuokecrafts 2Pcs Metal Standard Letter Size Notebook 3-Ring Binder Mechanism Replacement Kit,3 O Rings,Loose Leaf Binding Spines Combs For Personal 3 Inch Binder Aazon.co : Shuokecrafts 2Pcs etal Letter Size 3 D Rings Binder... Iron material,nickel plated,3 O ring,round ring binder mechanism Used for diy planners. Dimension Overall length: 10.9 Inch Ring distance :108/108mm=4.25/4.25 Inch Ring inner diameter:from 16mm to 76mm; 2 holes distance Ring inner diameter : from 16mm to 76mm ,Ring distance: 108mm/108mm,,2 holes distance: 270mm,base width: 20mm ,26mm The Package includes 2pcs A4 size metal ring mechanism Material Iron material,it's durable .