Avery File Folder Labels for Laser and Inkjet Printers, 0.66 x 3.43 Inches, White, Pack of 150 (8478) TrueBlock Technology completely covers everything underneath Labels are bright white for professional results every time Ideal for all types of file folders, documents, binders and small objects Customize with free tools, software and templates from avery website Guaranteed to stick and stay for a permanent labeling solution