These white address labels are ideal for addressing envelopes and many other uses, such as file folders, boxes, and videotapes. Paper labels direct from the roll for simple use. You can print labels 1-up or in a batch.This product is designed for the following systems:DYMO LabelWriter printers;Seiko SLP 200, 220, 240, Pro, 100, 120, SLP EZ 30, Plus.