Universal End Tab Folders, One Fastener, Letter, Manila, 50/BoxSturdy reinforced fastener folders are ideal for securing all of your important papers. Bonded fasteners make it easy to keep your files safe as well as organized. 3/4" expansion. 11 pt. Manila. File Folder Type: End Tab Fastener; Size: Letter; Folder Material: 11 pt. Manila; Color(s): Manila.