Specification Brand : Cobra Carbide BulletPoint1 : Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems BulletPoint2 : Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications BulletPoint3 : Round shanks allow use with a wide variety of toolholding systems BulletPoint4 : Through-hole flute style has a single flute that passes through the cutting head to reduce vibration and chip clogging; also called "zero flute" BulletPoint5 : For centering and countersinking on NC and CNC machines BulletPoint6 : Made in the USA CuttingAngleString : 60.0 degrees ExternallyAssignedProductIdentifier : 3132814122573 ExternallyAssignedProductIdentifier1 : 697334527770 ExternallyAssignedProductIdentifier2 : 0697334527770 ExternallyAssignedProductIdentifier3 : 00697334527770 FinishType : Uncoated IncludedComponents : Combined Drill/Countersink,#5 Size,Plain ItemName : Cobra Carbide 31668 Micro Grain Solid Carbide Combined Drill Bit and Countersink, Uncoated (Bright) Finish, Round Shank, Through-Hole Flute, 60 Degrees Point, #2 Size, 4" Length (Pack of 1) ItemPackageDimensions_Height : 1.778 centimeters ItemPackageDimensions_Length : 8.382 centimeters ItemPackageDimensions_Width : 2.032 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : combined-drill-countersinks Manufacturer : Cobra Carbide Material : Carbide ModelNumber : 31668 NumberOfFlutes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : 31668 ProductSiteLaunchDate : 2013-08-10T08:00:01.000Z Size : #2 StreetDate : 2017-05-15T00:00:01Z SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Aluminum SurfaceRecommendation1 : Aluminum SurfaceRecommendation2 : Alloy Steel SurfaceRecommendation3 : Cast Iron SurfaceRecommendation4 : Metal UnitCount : 1 UnspscCode : 27110000