Avery 4150 Thermal Address Labels, White, 1 1/8" x 3 1/2", 130 Labels/Roll, 2 Rolls/BX Address.1 1/8" x 3 1/2" .130 labels per roll.Box of 2 rolls (260 labels). Multi-purpose labels can be used for mailing, file folders and other labelling needs.Eliminate the need for expensive ink and toner by using versatile thermal labels .Permanent adhesive helps the labels stick and stay put to make filing and organizing easier.Smudge-free, scratch- and water-resistant and repel dirt, dust and grease .Easy to customize with free templates and designs using Avery Design and Print online software available at avery.ca.Packaged in rolls, making it easy to print 1 label or 100 labels.Rolls come in secure bag to help protect the light-sensitive thermal coating .Rectangle .White.Compatible with select Seiko Instruments Smart Label Printers (450, 440, 620, 650, 650SE), and Dymo LabelWriter printers (450 Twin Turbo; 4XL; 450 Duo; 450 Turbo; 450), sold separately.