Large capacity storage of letter size punched sheets. Flip Lock post mechanism allows top and bottom loading. Retractable storage hooks provide the option of storing in standard filing cabinets. Hooks pull out to hang and retract when not needed. Label holder on spine for easy identification of binder contents. Two vertical inside pockets for additional storage of loose documents. Capacity Range Min: 1" Capacity Range Max: 2" Sheet Capacity: 650 Colors: Blue.WLJ36544BL. 36544BL. Wilson Jones Wilson Jones Large Capacity Hanging Post Binder.