Show off the spine of a champion with binder spine inserts for three ring binders. Customization is a snap with free templates, fonts and designs on the AveryR site. Print completed spine inserts on a laser or inkjet printer. Microperforated sheets of cardstock separate easily and have smooth clean edges. Sturdy cardstock makes them easier to insert into the view binder spine. Use label binder spines for meetings, clients, personal reference or any of a host of other uses. Spine ID inserts are perfect for organizing binders at home, school or work. Spine Width: 0.5in; Colors: White; Machine Compatibility: Laser Printers; Inkjet Printers.