Designed for durability at points of greatest wear, TUFF file folders feature poly-laminate reinforcement strips along bottom edges and two-ply Shelf-Master tabs for extra strength where you need it most. Choose folders with no fasteners or those with two 2" capacity "B" style bonded fasteners in positions 1 and 3 to subdivide documents and make it easy to keep papers in sequential order for frequent reference. Folders are scored for 3/4" expansion.