Lock your whiteboard markers to any metal surface with Expo® Magnetic Dry Erase Markers with Eraser. An integrated magnet provides convenient and care-free storage on metal-backed white boards and other metal surfaces. What's more, the cap features a handy Expo eraser for precise, on-the-fly erasing. Each Expo dry erase marker has a fine tip that draws bold details and quick-drying, low-odor ink that's perfect for both the office and classroom. Each pack includes 4 markers. Sold as 3 packs for a total of 12 markers.