Aker Leather Model 581 Double Citation Book Cover Basketweave Black A581-BW. S. cowhide and contains strong metal clips to securely hold ones citation book in place. The 581 includes two thin plates of Kydex to stop the carbon transfer to blank tickets underneath. It is available in black with either plain or basketweave finish and comes with chrome snaps. Package Contents: Aker Leather Model 581 Double Citation Book Covers The Aker Leather Aker - 581 Double Citation Book Cover is a quality addition to the Aker Leather lineup. For more great deals on Office Supplies by Aker Leather please browse our page. Aker Leather Aker - 581 Double Citation Book Cover - A581-BW