Try metal binding for your next project-the results are astounding and alluring. Metal binding channels, with either a linen or leatherette finish, add another detail to your work that leaves clients and audiences impressed. These types of spines work great for manuals, photo books, portfolios, catalogues, or anything else, professional or hobby, that needs to be bound. This rich burgundy shade fits most office theme burgundies. We have them in 5mm to 33mm, which means sheet capacities from 20 to 300 sheets of 20lb paper. These secure spines will keep all of your hard work together through lots of use!