Specification Brand : Flex-Hone BulletPoint1 : [QUALITY]- Proudly Made in the USA. The FLEX-HONE is long lasting, lowering total cost of use compared to other brush options. BulletPoint2 : [BENEFITS]- The FLEX-HONE for Chamfer Blending blends and radiuses sharp edges and removes microburrs on chamfered holes eliminating stress risers caused by the chamfering operation. BulletPoint3 : [STYLE]- Designed for 0.016"-0.030" Chamfer Size Range. BulletPoint4 : [MATERIALS]- Excellent on medium to high carbon steels and heat-treated steels to 50 Rc. It is also useful in titanium. BulletPoint5 : [120 GRIT ZIRCONIA ALUMINA #1525 ABRASIVE]-Excellent on low carbon to medium carbon steels, stainless steel and cast iron. Provides the longest tool life but less aggressive, grit for grit over the life of the tool. Typically achieves a finish of 35 - 50 Microinch (.9 - 1.4 Micrometer). BulletPoint6 : [WHAT'S INCLUDED]-1 Each of a GB Standard Duty FLEX-HONE: 4.125"(105mm) Bore Diameter, 4" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.751"-4.125". PLEASE NOTE: ORDER BY BORE SIZE. CompatibleMaterial : Nickel CompatibleMaterial1 : Low Carbon Steels CompatibleMaterial2 : Medium Carbon Steels CompatibleMaterial3 : Stainless Steel CompatibleMaterial4 : Cast Iron ExternallyAssignedProductIdentifier1 : 843469161222 ExternallyAssignedProductIdentifier2 : 0843469161222 IncludedComponents : FLEX-HONE® Tool ItemName : Brush Research CHB7M320BC Chamfer FLEX-HONE®, 0.276" (7mm) Diameter, 0.016"-0.030" Chamfer, 320 Grit, Boron Carbide Abrasive (Pack of 1) ItemPackageDimensions_Height : 28.9052 centimeters ItemPackageDimensions_Length : 1.0922 centimeters ItemPackageDimensions_Width : 8.7884 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flex-hones Manufacturer : Brush Research Manufacturing Material : Zirconia Alumina #1525 Material1 : Stainless Steel Material2 : Carbide ModelName : FLEX-HONE® ModelNumber : GB418120Z25 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : CHB7M320BC ProductSiteLaunchDate : 2023-04-23T00:59:08.905Z Size : 4.125" (105mm) Style : 120 Grit SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 47131600