Check the listing for details. 400#1500# Grit Cutter Sharpener Polishing Stone Kitchen 2-Sides Sharpening Stone. Color: Gray, Condition: New. Listed at 11.35 USD. Features:Two kind of sharpening Stone:Orange corundum Whetstone, also known as orange stone, abrasive cutting edges sharp, good finish, high durability, hardness and corundum similar, good toughness, usually better than corundum grinding performance for tool steel, alloy steel, hardened steel molding grinding, especially for a variety of cutting tools, measuring tools, instrument parts for finish grinding of workpieces requiring high Gray carbon Whetstone, with high hardness and a certain toughness, hardness second only to boron Whetstone, abrasive sharp, good thermal conductivity, used for optical glass, tungsten carbide, titanium, agate, cylinder liner, bearing steel polishing, sharpening high-speed steel cutting tools, but also for energy originals, ceramics and polishing hard and brittle materials such as boron carbide Whetstone, is a high hardness abrasive, grinding capacity, grinding tool for Semis sharpen their own hardness, especially wear-resistant, easy out scratches Whetstone, for optical instruments, instrumentation, precision polishing element has a unique role 100% Brand new and high quality.This sharpening stone is made of extra-hard aluminum oxide,and is double sided with coarse grit and fine grit.Corundum and white fused alumina.Material:Alumina oxide plus carborundum composite stones.Grit:Oriange 400/Grey 1500.Ideal size for bench work.Intended for sharpening all types of tools and knives.Dimension:9.8cm x 3.5cm x 2.2cm - 3.86inch x 1.38inch x 0.87inch. Package Contents:1 x Sharpening Stone