[High Quality Carbon Steel] Professional sharpening steel rods are made of high carbon steel and diamond plating with hardness up to 80 HRC; using innovative Japanese technology to polish 3000 grit surface steel rods; which prevents the edge from being damaged when sharpening. And the knife sharpener is strictly magnetized to prevent metal particles from being inhaled or falling on food. [Sophisticated Shape Design] The 10" sharpening rod length is ideal for most size knives; the sword-like design is lightweight and portable without being bulky. Features an ergonomic, non-slip ABS handle and all-steel handle guard head; ensures your hands are protected while using. [Professional Knife Sharpening Rod] The high-carbon steel honing rod is very easy to use; place the heel of the blade on the top of the sharpening rod at an angle of preferably 20 degrees; sharpen the blade from the shank to the tip, repeat 2-3 times, then turn to the other side of the tip until the blade is sharp. Suitable for chef's knife, serrated bread knife, paring knife, butcher's knife, scissors, hunting knife and other knives. [Daily Maintenance Instructions] Although it is not necessary to wash the honed steel knife rod after each use of the sharpener, it is recommended that a non-woven cloth dipped in cooking oil be wiped over the body and dried; if washing with water, be sure to dry completely after washing and hang in the shade to dry; to remove metal particles and stains. [STRICT QUALITY AUDIT] ミツモトサカリ knives are strictly audited for quality certification and forging.