Lansky ceramic sharpening stone fine

Lansky ceramic sharpening stone Fine grit: 600 grit / fine sharpening stone made of aluminum oxide / alumina (Al2O3) Brass threaded insert for stainless steel thumb screw Ergonomic plastic housing Made in the USA! The fine grit of 600 grit of the fine ceramic Lansky sharpening stone is ideal for maintaining an already sharp blade and for smoothing and polishing scratches. The Lansky sharpening stones in this series are made of aluminum oxide (Al2O3), also known as alumina. Designed for use with the Lansky Controlled Angle Sharpening System.