Need a simple form of binding spines for your big projects? Metal binding channels from MasterBind are the way to go! No punching or gluing required-they simply clamp your pages together with their unmovable hold. They can hold anywhere from 20 to 300 pages, since they come in spines that are 5mm to 33mm thick. They also have options for textures: linen, leatherette, or painted gloss. All of their green shades are a deep, professional forest green. MasterBind also has matching hard covers, for those who really want to impress their clients. These spines are ideal for manuals, photo books, portfolios, catalogues, or anything else that can be bound together.