Specification Brand : MBHALBY BulletPoint1 : These step drills allow you to drill and counterbore in one operation and are less likely to clog that 2-piece counterbores especially in aluminum. BulletPoint2 : Standard spiral, helical flutes. BulletPoint3 : Cuts both body and counterbore diameters in a single pass. BulletPoint4 : The counterbore angle on bits is 90 degrees or 180 degrees. BulletPoint5 : M2:d=2.4mm D=4.5mm,L=48mm,l1=10mm Color : Black CuttingAngleString : 82.0 degrees ExternallyAssignedProductIdentifier : 7038951654228 ExternallyAssignedProductIdentifier1 : 698464074745 ExternallyAssignedProductIdentifier2 : 0698464074745 ExternallyAssignedProductIdentifier3 : 00698464074745 FinishType : Uncoated (Bright) Finish ItemName : Counterbore Twist Step Drill Dual Cutting Bit HSS for Metal 90 180 Degree M3 M4 M5 M6 M8 M10 M12 Cone Drilling Tool 1PCS(Black,M12-(D14MM)_180 Degree) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : counterbores Manufacturer : MBHALBY Material : High-Speed Steel MfgSeriesNumber : 4603 Series ModelNumber : MBHALBY NumberOfFlutes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : MBHALBY ProductDescription : These step drills allow you to drill and counterbore in one operation and are less likely to clog that 2-piece counterbores especially in aluminum. RMP 100~1000r/min Design Standard spiral, helical flutes. Cuts both body and counterbore diameters in a single pass. The counterbore angle on bits is 90 degrees or 180 degrees. Application Designed for drilling mounting holes for socket-head cap screws. The dual cutting diameters produce holes sized for each size screw. Permit the holes to be drilled for both through holes and tapped holes. The through hole style produces holes with a body diameter slightly larger than the major diameter of the screw. The tapped hole type drills holes with the diameter needed for tapping the holes. Both types produce a counterbored area correctly sized for the screw head. Dementions M2:d=2.4mm D=4.5mm,L=48mm,l1=10mm ProductSiteLaunchDate : 2025-02-24T09:29:55.799Z Size : M12-(D14MM)_180 DEGREE SurfaceRecommendation : Alloy Steel UnitCount : 1 UnspscCode : 27111700