Preferred Postage Supplies White 1" Wafer Seals Envelope Seals 5000 Tabs Per Roll (1 Roll Per Box) USPS Approved For Tabbing Friction Fed Tabbers 5,000 1" tabs per roll Outside diameter 7.75" Our tabs Meet USPS Requirements Perfect for warehouse and date coding applications Great for new postal tab / wafer seal requirements Works in most friction fed tabbers Uses permanent adhesive with temperature range of -25 to +85 celcius