Specification Brand : HARFINGTON BulletPoint1 : Size - 4pcs mini chainsaw teeth sharpener, 3/16" 4.8mm diameter, 24mm grinding head length, 3mm shank dia. BulletPoint2 : Material - Made of diamond coated ceramics, excellent grinding effect with long service life, not easy to wear off. BulletPoint3 : Application - These grinding stone files are good for chainsaw teeth sharpening, also for metal surface polishing, wood and jade shaping, electric saws, glass, steel, and more. BulletPoint4 : Feature - The ceramic grinding bits are easy to install, used with an electric grinder to easily sharpen your saw chain. BulletPoint5 : Note - With finely and evenly diamond grains on the drill bit, the chainsaw grinding file is also suitable for high-precision work. CareInstructions : Hand Wash Color : Silver ExternallyAssignedProductIdentifier : 9148324715871 IncludedComponents : 1 ItemName : HARFINGTON 4pcs Ceramic Chainsaw Sharpener Bits 3/16" 4.8mm Cylinder Head Electric Chain Saw Grinder ItemPackageDimensions_Height : 9.4 centimeters ItemPackageDimensions_Length : 1.7 centimeters ItemPackageDimensions_Width : 6.1 centimeters ItemTypeKeyword : sharpening-stones ItemTypeName : Handheld Knife Knife Sharpener Jig Manufacturer : HARFINGTON Material : Ceramic ModelName : T-200MM ModelNumber : hta220719hh0218 NumberOfItems : 1 PartNumber : hta220719hh0218 ProductDescription : Size - 4pcs mini chainsaw chain sharpener, 3/16" 4.8mm diameter, 24mm grinding head length, 3mm shank dia. Material - Made of diamond coated ceramics, excellent grinding effect with long service life, not easy to wear off. Application - These grinding heads are good for chainsaw teeth sharpening, also for metal surface polishing, wood and jade shaping, electric saws, glass, steel, and more. Feature - The chain grinding bits are easy to install, used with an electric grinder to easily sharpen your saw chain. Note - With finely and evenly diamond grains on the drill bit, the chainsaw grinding file is also suitable for high-precision work.