Wafer Tab Seals, 1.5 inch Diameter, Translucent, Great to seal Folded Self-Mailers, Booklets and Catalogs, 1000 Label Seals per Roll 1.5" Clear frosted translucent Sealing Labels Seal Envelopes or small Folding Boxes 3" core, will work on any machine, or hand applied Meets US Postal Service regulations for folded self mailers Easy Peel and Apply