A special, pliable abrasive-type eraser used to clean metal filings which accumulate during the sharpening process on the alumina ceramic Crock Stick® sharpening rods. Proper rod cleaning maximizes sharpening efficiency. Can also be used for cleaning metal and sports equipment. 3 1/4" x 1" x 5/8". Mildly abrasive eraser created specifically to clean metal particles which accumulate on ceramic Crock Stick rods during the sharpening process. Quickly removes metal deposits and restores the maximum sharpening ability of ceramic rods. Also works on many stains on porcelain, brass, or steel knife blades, etc.