This Leitz lever arch file features a unique, patented mechanism that opens 180 degrees for ease of use. The 50mm capacity can hold up to 350 sheets of A4 or foolscap 80gsm paper. The lever arch file also features wipe clean polypropylene covers, a thumb hole for easy retrieval from a shelf, metal shoes for durability and a spine label holder for quick identification of contents. This pack contains 10 black files.