Card Inserts for Label Holders - 20mm High White card inserts for self-adhesive and magnetic backed label holders. Easy to apply and completely customisable to show numbers, letters, directional arrows or barcodes. Easy to update and relocate Choose from 2 sizes: Card Inserts - 20mm(h) x 500mm(w) - Pack of 20 Card Inserts - 20mm(h) x 80mm(w) - Pack of 100 Please specify whether the inserts are to be used with self adhesive or magnetic label holders Colour: White