The Lansky Eraser Block is pliable abrasive used to clean metal filings that accumulate during the sharpening process on the alumina ceramic Crock Stick sharpening rods. Proper cleaning of the Crock Stick rods maximizes sharpening efficiency.
In addition, the Eraser Block works to erase stains on dozens of surfaces: porcelain, brass, steel (knife blades), etc. Measures 3.5" x 1" x .5" in size.