Specification Brand : Brush Research BulletPoint1 : Flexible Cylinder Hone made of Silicon Carbide BulletPoint2 : Hone is Made in USA by Brush Research Manufacturing BulletPoint3 : Hone is self centering and can be used with 3/8" or 1/2" chuck drill BulletPoint4 : Perfect for bore honing and cylinder refinishing BulletPoint5 : The hone size listed on the product is the bore it is intended to be used for (or slightly smaller bore will work) CompatibleMaterial1 : Alloy Steel CompatibleMaterial2 : Nickel CompatibleMaterial3 : Metal ItemName : Brush Research 2 1/4" (57mm) Flex-Hone Cylinder Hone Tool 120 Grit (Silicon Carbide) ItemPackageDimensions_Height : 28.8036 centimeters ItemPackageDimensions_Length : 1.397 centimeters ItemPackageDimensions_Width : 13.7922 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flex-hones Manufacturer : Brush Research Material : Silicon Carbide NumberOfItems : 1 PartNumber : BC214120SC ProductDescription : Easy to use cylinder hone that can attach to a standard hand drill or drill press. ProductSiteLaunchDate : 2010-01-30T00:32:23.000-00:00 SupplierDeclaredDgHzRegulation : unknown UnitCount : 1 UnspscCode : 27110000