Magnetic Whiteboard Eraser Set - Premium 4 Color Pack - For Dry Erase Pens And Markers - Strong Magnet Sticks To All Dry-erase White Boards - 4 x 2.3 x 0.8" - Cleaner For Home, School And Office PREMIUM 4 PACK - **(BLUE, GREEN, RED and YELLOW)**. Please make sure you are buying the Navy Penguin erasers from NAVY PENGUIN (you need to see "sold by Navy Penguin" 2 rows above), as other sellers are selling very low quality fakes which are not our products from images. Navy Penguin is an exclusive seller of the NAVY PENGUIN brand. STRONG MAGNETS - sticks to all magnetic whiteboards, refrigerators, calendar and presentation boards, kids dry erase boards, bulletin, wall and glass planning boards. Exact size of the eraser is 4 x 2.3 x 0.8 inches. BEST QUALITY MATERIAL - clean any large or small board easily, no need for sprays or cleaners. Eco friendly, non-toxic, no smell. MULTIFUNCTIONAL USE - works well with all popular whiteboard brands. Clean your white and easel boards in the office, on your desk, in the school and classroom, kitchen fridge, at home. Great help for students and teachers. 100% SATISFACTION GUARANTEED - backed by the Navy Penguin Lifetime Warranty. If you for any reason are not happy with the dry erase erasers, please let us know, we'll refund your money immediately, no questions asked.