This Insert Binder features 4 D-rings, 50mm diameter in capacity that holds up to 300 sheets of office paper. These Insert Binders are the sustainable option to your filing solution. Constructed from 100 percent recycled board, and recyclable polypropylene. Clear overlayed webbed front, back and spine cover insert ideal for presentations, conferences, proposals or reports. Clear pockets are also located on the inner board front and back covers. A4 size. 4D 50mm rings. Blue colour.