Binder, 30 holes, set of 3 Includes dedicated film sheets (60 sheets total) 2 binders each contain 20 sheets 1 binder contains 10 sheets 10 unused film sheets are separate 34 x 26 cm Thickness: 4 cm This photo system file is for storing negatives. It's probably a valuable item now, and I hope someone looking for one will find it useful. The 30-hole refills are commonly sold, so you can use it for things other than photos. It's durable, so you can store things in it for a long time.