Boker Super Eraser

'The versatile Boker Super Eraser is ideal for grinding, scrubbing, smoothing, cleaning and polishing metal surfaces. Carbon-steel blades can develop dark spots or surface rust over time; this is normal and not a defect, though it can affect the knife’s appearance. Regular maintenance with the Boker Super Eraser restores the blade’s shine—its 240-grit abrasive is perfect for these tasks. Made in Germany.'