1.57x4 inches/4 x 10cm magnetic label holder, including 20 magnetic labels, 20 transparent plastic protective films and 40 thickened paper cards, the number of label magnets is enough for your work and daily use. Make this label holder flexible, weatherproof, curl , easy to apply, reusable and not easy to get dirty; "C" channel allows the card to slide nicely into the magnetic channel; protective film is to prevent printed or written text on the card To fade, a protective film after installing on a filing cabinet or metal shelf. The magnets of the magnetic card holder are strong and stable, suitable for industrial and commercial use. Great for organizing warehouse shelves, freezer doors, toolbox drawers, office, school, and supermarket product names, filing cabinet descriptions, items on metal walls, part numbers in sample rooms, electrical panels, and more, and is an excellent tool for marking any metal best solution. Keep your work area organized and avoid communication barriers. Reusable and mess-free, these magnet holders a ton of money considering the ease of installation and years of reusability; it always keep your cabinets, whiteboards, metal walls and shelves clean and tidy, even when removed There is no residue, it can be repositioned at any time, and the magnet part can be easily removed. Colour:black+white Material:Rubber soft magnetic Size:100x40mm Package Contents: 20 x Magnetic Label Holder (1 sheet of clear film, 2 sheets of paper per sheet) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.