Universal One Laser Printer Permanent Labels, 2 x 4, Clear, 500/BoxPermanent, self-adhesive labels go on, stay on and apply quickly and easily. Labels seem to disappear on your envelopes, giving your mailing a high-end look and feel. Blank labels allow you to customize to meet your specific needs. Print labels on laser or inkjet printers. Templates available in popular software. 8 1/2 x 11 sheets. Label Size - text: 2 x 4; Label Color(s): Clear; Machine Compatibility: Laser Printers; Material(s): Paper.