1/2"x1" Multipurpose Label, Dymo 30333 Compatible for DYMO LabelWriters 330 400 450 Twin Turbo Duo 4XL Printer Compatible with DYMO 30333 Multipurpose Labels / Dimensions 1/2" x 1" 1 Roll / 1000 labels per roll / 1 inch core High quality, bright white direct thermal paper