These 0.5” x 1” labels are compatible with DYMO Labelwriter 330, 400, 400 Duo, 400 Turbo, 400 Twin Turbo, 450, 450 Duo, 450 Turbo, 450 Twin Turbo, 4XL and more. An index hole in the middle of every 2 labels to position labels and avoid misprinting.
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