Ideal for fiber optic cables and LAN cables, these single label structure 21mm x 45mm yellow flag labels are even easier to apply than traditional flag labels. A wide printable area means information or barcodes can be clearly read. For P-touch PT-E800W, PT-P900, PT-P900B, PT-P900WC, PT-P900W, PT-P950NW Label Printers. Polyester 0.82 in x 1.7 in (21mm x 45mm), 0.41 in x 1.7 in (10.5mm x 45mm) folded. 75 labels per cassette.