It doesn't matter if your postage machine feeds from a wheel of tapes, or pulls individual tapes through a dispenser. All postage machines draw their envelopes through a very similar path to get stamped. These pinwheel tapes are treated exactly like a letter to your postage machine. It pulls it through and applies the stamp. Just peel off the adhesive label and apply it to whatever you want! This unique feeding method makes our pinwheel tapes completely universal! For use in the T1000, OptiMail 30, and MyMail. *The only known incompatible products on the market are the PostBase 45 Fully Auto and PostBase 65 Fully Auto.