Naniwa Rust Eraser (Gray)

The Naniwa Rust Eraser (Gray) is a coarse abrasive block designed for effective removal of visible and aged surface rust from knives and carbon-steel tools. This flexible PVC-based block with aluminum oxide abrasive works like an “eraser” — removing corrosion from metal without damaging its structure.

Thanks to its high abrasive power, the Gray Rust Eraser is suitable for cleaning stubborn rust spots, oxidation marks, and heavy tarnish. It quickly prepares the tool for further work such as sharpening, grinding, or polishing.

Specifications

• Size: 2.0 × 1.6 × 0.8" (50 × 40 × 20 mm).
• Weight: 77 g.
• Abrasive rating: 100 grit (Coarse) — designed for removing heavy and aged rust.
• Material: Flexible PVC block with aluminum oxide abrasive.
• Use conditions: Can be used dry, or with a small amount of water or oil.
• Country of origin: Japan.

Suitable for

• Removing heavy, coarse, or aged surface rust from knives and carbon-steel tools.
• Cleaning metal before sharpening — preparation for grinding or honing.
• Removing tarnish, dark spots, and corrosion buildup.

How to Use

If needed, slightly moisten the surface with water or oil. Clean the metal with light straight or circular motions until rust is removed. After use, rinse and dry the tool thoroughly; apply protective oil if necessary.