Naniwa 210×70×20 mm Gouken Hayabusa 4000 Grit Whetstone, Splash-and-Go, Osaka

Naniwa 210×70×20 mm Gouken Hayabusa 4000 Grit Whetstone, Splash-and-Go, Osaka

$95.00

EAST WEST TOOLS QUALITY GUARANTEE

We stand behind the quality of our tools with a 30-day return policy
and support for exchanges or repairs when needed. Read the full policy here.

SHIPPING

We dispatch every weekday from Perth.
Orders over $250 ship FREE over $100 for our local legends.
Regular: $12.50 Express: $19.00 Read the full shipping policy here.

PRODUCT CARE

Proper care keeps your tools performing for decades. Read the full guide.

 

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Naniwa Polishing Industry

Introducing

Naniwa Polishing Industry

Founded in 1941 in Osaka, Naniwa Kenma specializes in bonded abrasives for metalworking and woodworking. Their waterstones are engineered for stable hardness and predictable cutting, with lines tuned for home and professional use.

The Gouken (meaning “strong polish”) line is built for high-precision crime, where feedback, durability, and polish clarity matter most.

Explore Sharpening

What Sets Our Tools Apart

Cutting vs Finishing

4000 grit is the ideal finish, faster and cleaner than coarser stones, it’s designed for edge refinement, not reprofiling.

Quick prep, easy cleanup

Splash a little water, sharpen, and rinse. Its dense surface resists clogging and stays sharp longer.

Daily flatness matters

Flatten after every few uses to keep edges consistent, use a flattening stone for the smoothest feel and return.

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