Eraser Block is a pliable mildly abrasive eraser created specifically to clean metal particles which accumulate on Lansky's alumina ceramic rods during the sharpening process. Used periodically the Eraser Block quickly removes metal deposits and restores the maximum sharpening ability of ceramic rods.
Eraser Block also works on many stubborn stains on porcelain, brass, steel blade knives, etc. For tough spots or to reduce abrasion, wet the Eraser Block with water. To clean the Block rinse with water.