Features:Designed to grind carbide and hard steel, stone, metal and other processing and polishing.Mainly used in alloys knives, saw blades, serrated grinding process.Resin bond for uncomplicated grinding operation with good material removal rates, while maintaining a low thermal influence on the work piece. Can be used in various tools and cutter applications.Made of high quality materials, it is of strong strength and long durability.Specifications:Condition: 100% Brand new and high qualityMaterial: Resin, diamond alloyColor: As the pictures showCraft: SinteringGrit: 180 gritHardness: 10Concentration: 75%Outside Diameter: Approx. 10cm / 3.94 inch Mounting Hole Dia.: Approx. 2cm / 0.79 inch Thickness: Approx. 1cm / 0.4inchWeight: Approx. 120gPackage Includes: 1 x Grinding WheelNote:Please allow 0~1 inch error due to manual measurement. Thanks for your understanding.