Magnetic Whiteboard Erasers ;Get more mileage out of your erasers! Die-cut racecar erasers glide easily, yet are magnetic, so they stick where you put them. Plus, colorful numbered cars (1–4) track progress toward goals or allow you to create a whiteboard game. Measure 4 1/2 x 1 x 2 1/2 Inches. ;LER 2693 Set of 4 $6.99;