DYMO Compatible LabelWriters 1738595 Multipurpose Barcode Labels - 8 Rolls for DYMO LabelWriters 330 400 450 Twin Turbo Duo 4XL Printer 1 inch core 8 Rolls / 450 labels per roll 3/4" x 2-1/2" white labels Compatible with Dymo part #1738595 Permanent adhesive labels