The OEM Samsill Insertable D-Ring Binder SAM16427 is designed for easy customization with a nonstick clear overlay on the front, back, and spine. Made from environmentally friendly materials, it ensures that cover inserts and contents remain intact without sticking or lifting. The locking D-rings secure letter-size documents and hold up to 25 percent more sheets than standard round rings, with a 6-inch capacity that accommodates approximately 1,250 sheets. Additional features include two clear inside pockets for extra storage and a heavy-duty recycled chipboard construction that withstands frequent use.