Clear Poly 1.5" Wafer Tab Round Product and Mailing Label Seals 1 1/2" (1 Roll, 1000 Seals) Clear round poly wafer tab seals suitable for sealing product boxes, mailers, or brochures Meets new US Postal Service regulations for mailing seals 1.5" Round can be hand applied or by machine 1000 seals/labels per roll 4.75" outer dimension, 3" core