Eiji Takeuchi's "Diamond Knife Sharpener" made in Japan

Anyone can easily sharpen knives like a professional. ●When your knife is no longer sharp, you can quickly take it out and sharpen it right away! ●No need for water or extra power! Just push and pull a few times. ●Just like a professionally hand-sharpened knife, the serrated edge maintains its sharpness. ●The secret is the patented W-curve whetstone patent number 3991158 ●Suitable for iron, stainless steel, and titanium!●Reliably made in Japan [Photo description] (1st photo) Product image (2nd photo) Image image (3rd photo) Before use/Tomatoes are crushed (4th photo) After use/Cuts cleanly! (5th photo) Product image (6th photo) Product description ●Size: (approx.) Width 22 x Depth 5 x Height 5cm ●Weight: (approx.) 140g ●Material/Body: ABS resin, Grindstone: Metal curved whetstone Diamond coating (one side gauge carbide chrome finish), Core rod/nut: Aluminum, Adjustment screw: Yuriya screw ●Made in Japan