Stainless Steel Knife Sharpener for Double-Edged Blades, Ambidextrous ★ Color that easily matches any kitchen with black and metal (compared to yellow-green or red) ★ Safe because the whetstone part and the handle are separated. ★ Can be used immediately even during busy times, as there are no covers, etc. Dimensions: Approximately 20.556cm Materials: Sharpening part / Ceramic, Tungsten steel Bottom / EVA Body / Polypropylene, Stainless steel Made in China ※ There may be concerns about burrs etc. from manufacturing. -------------- ◆ How to Use ❶ Place on a flat surface and hold the handle down. ❷ Insert the knife blade into the sharpening part and sharpen while pulling. ◆ Notes on Use ● Insert the knife blade into the groove and pull towards you with light force 4-5 times. (Do not sharpen back and forth) ● Use on a stable, flat surface. ● Be careful not to slip due to water or oil. ● Hold the handle firmly and do not bring your hand close to the knife blade. No. ① is the coarse grit (tungsten steel). No. ② and ③ are the fine grit (ceramic). ※ ② and ③ are the same fine grit. Use in the order of ① coarse grit → ②③ fine grit. -----------------------