board eraser features: 1. rectangle shape 2. for school&office 3. with four grain of magnets 4. with ISO certificate Detailed information about the big board eraser:1) there are two colors for choosing; one is grey white, and the other one is blue, or as required;2) It is made of EVA , 4 grain of magnet, one layer felt, and ABS plastic.3) per big board eraser size:133*35*36mm;4) 10 pcs big board erasers packed in a inner box, and inner box size:332*86*160;5) 100 pcs big board erasers packed ...>>more