Repeatedly use our durable metal prongs with your medical charts and office files without worry of breaking of prongs or coming detached from the folder Maintains quality during use for years with our durable paper folders with durable 11 PT green paper stock and reinforced 1/3 cut top tabs at assorted left, center, and right positions Perfect fit for your standard letter size client files, medical patient files, or office files Easily stack multiple folders on top of how due to our low profile bonded fasteners. Folders will not catch on one another with this fastener design Perfect for use in a color-coded file system in your classroom, law office, or business office with our Green paper stock. Durable Fastener File Folders designed for repeated use in your offices We understand in an office environment you need durable folders that can stand take the abuse of years of use in a busy office, thus we designed folders to handle your office environment Our Fastener file folders manufactured with our thick 11 PT Green paper stock and durable 2 prong fastener design Our metal fasteners are durably made and reinforced thus allowing for repeated use in tough office environments Our file folders are made of thick 11 PT Green paper stock with reinforced top tabs so they can take the daily abuse of a rugged office environment