Internet Postage Stamps ( 1 Roll / 200 Labels) # 30915-1 REPLACES DYMO # 30915 Label Size: 1 5/16" x 1 7/16" FOR ENDICIA SOFTWARE ONLY! 200 Labels per Roll / 1 Roll Use for all domestic or international mail class and on all mailpiece types including letters, flats, packages, and thermal printer accuracy avoids misprints. Postageink Internet Postage Stamps Label Rolls can be printed using the following thermal printers, Dymo: LabelWriter EL60, LabelWriter Turbo, LabelWriter 320, LabelWriter 330, LabelWriter 330 Turbo, LabelWriter 400, LabelWriter 400 & 450, LabelWriter 400 & 450 Turbo, LabelWriter 400 & 450 Twin Turbo, LabelWriter 450 Duo, LabelWriter 4XL models, Seiko: SLP 440, SLP 450, Zebra: LP2844, Samsung Bixolon: SRP 770II Free Same Day Shipping!