[COMPLETE ORGANIZATION KIT: 100 PCS & 250 INSERTS] A comprehensive labeling solution featuring 100 magnetic holders and 250 thickened paper inserts. The extra inserts allow for multiple reuses and easy corrections. Perfect for organizing office supplies, toolboxes, refrigerators, and mailboxes, ensuring a tidy and efficient environment. [CLEAR PROTECTIVE SHIELD & DURABILITY] Includes 100 transparent PVC protective films that safeguard your labels from dust, moisture, and fingerprints. These covers ensure your handwritten text or printed barcodes remain crisp and professional over long-term use, while the flexible rubber magnet material ensures the holders won't crack or break. [EASY-INSERT C-CHANNEL DESIGN] Features a user-friendly C-channel structure that streamlines your organization process. Simply slide the paper insert and protective film into the side of the holder. This design allows for effortless label updates without having to remove the magnetic strip from the surface, saving time during inventory changes. [STRONG MAGNETIC ATTACHMENT] Engineered with a high-suction magnetic backing designed to provide a secure and reliable hold on any flat metal surface. These holders stay firmly in place on warehouse racks, filing cabinets, and metal lockers, resisting sliding or falling even in busy, high-traffic environments. [PROFESSIONAL 1" x 3" STANDARD SIZE] The 1" x 3" dimensions are the industry standard for versatile labeling, offering a clean and professional look for any workspace. This size fits perfectly on standard shelf edges, file folder tabs, and bin fronts, providing enough space for clear, legible identification without cluttering your storage area. MaxGear 30-Pack Magnetic Label Holders, 1 x 3 Inch / 2.5 x 7.62cm Magnetic Labels, includes 100 magnetic labels, 100 clear PVC plastic protectors, and 250 thick paper cards. The number of label magnets is enough for your work and daily use, the magnetic labels are made of high-quality soft rubber magnets, which are bendable and will not break, the transparent plastic protective film is made of pvc material, high-definition and transparent, thickened white paper strips are provided Make writing more fluent. The way to use the magnetic label is to write on the paper first, then slide the paper card and transparent protective film into the C magnetic slot, and finally stick the magnetic label holder on any metal surface. The magnetic label holder adopts the latest technology synthetic rubber magnet, which has stronger suction than ordinary magnetic labels, is not easy to fall off, can be used continuously and repeatedly, and can easily move back and forth on any metal surface. Shelf magnetic labels are suitable for all kinds of flat or curved metal surfaces, such as warehouse shelves, supermarket shelves, office filing cabinets, magnetic whiteboards, refrigerators, lockers, tool boxes, mailboxes, iron drums, etc.