30-Pack C-Channel Magnetic Label Holders 1 x 3 Inch with Magnets for Tool Box Labels and Metal Whiteboards Magnetic Label Holder: You will receive 100 magnetic label holders; the number of magnetic labels is sufficient for your work and daily use. (1 x 3 inch / 2.5 x 7.5 cm) Strong Magnets: The magnetic label holder uses the latest synthetic rubber magnet technology, which provides a strong adhesion to any metal surface compared to ordinary magnetic labels, while also withstanding frequent use without breaking. Wide Application: Magnetic labels are suitable for various flat or curved metal surfaces, such as warehouse shelves, supermarket shelves, magnetic name badges, office filing cabinets, magnetic whiteboards, refrigerators, lockers, toolboxes, mailboxes, etc. High-Quality Material: The magnetic labels are made of high-quality soft rubber magnets that are flexible and will not break; The clear plastic protective film is made of PVC material to keep your labels clearly visible. Each white sheet is durable cardstock, double-sided. Everything is ready to use and won't leak. EASY TO USE: This magnetic label holder makes labeling a breeze. You can write notes on the spare paper that comes with the magnetic labels, then slide the paper card and the clear protective film into the C-channel and finally attach the magnetic label holder to a clean and flat metal surface. Color: Black. Material: Rubber. Package Contents: 30 x Magnetic Label Holders. Only the above package contents are included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm.