Paper address labels print directly from the roll for simple use. Print labels one-up or in a batch. Compatible with DYMO LabelWriter printer EL40, EL60, CoStar LabelWriter XL, 300, 310, Turbo and CoStar LabelWriter XL Plus, Turbo, 320, 330, 330 Turbo, 400, 400 Turbo, Twin Turbo and DuoTurbo. Please note: these labels will only work with older Dymo LabelWriters machines. It will not work with any LabelWriter that has Automatic Label Recognition.