Specification Brand : NewShark BulletPoint1 : 【HSS M35 5% Cobalt Coating】High speed steel along with cobalt coating ensures outstanding durability and sharpness, can reduces the friction. BulletPoint2 : 【Requirement】 M35 Cobalt High Speed Steel is more suitable for hardening materials. Ideal for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other softer metals. Not suitable for glass or ceramic materials. Not applicable to high carbon steel and heat treated steel. Pay attention to speed, pressure and heat control when drilling. BulletPoint3 : 【Structural Design】With the step drill bits we offered, machining holes of different diameters saves a lot of trouble.Drill metric sizes: 4mm-20mm, the difference between each layer is 4mm.Split point tip at 118 degrees for added abrasion resistance. The dual edge design provides a smoother cut and allows material particles to easily escape for a cleaner drilling operation. BulletPoint4 : 【Efficiency】The double-edged design keeps metal filler from flying around and clears chips faster, so you can drill more smoothly without heating. BulletPoint5 : 【SERVICE】If you have any problem with our metric drill bit set or are not satisfied with the product, please feel free to contact us. Color : M35 (4MM-20MM) CuttingAngleString : 118 degrees FinishType : Cobalt FinishType1 : Uncoated FinishType2 : Titanium Nitride GpsrSafetyAttestation : 1 ItemName : Step Drill Bit, HSS M35 5% Cobalt Metric Step Drill Bit Set (4MM-20MM), 9 Sizes Step Bit for Impact Driver, Multiple Hole Stepped Up Bits for Stainless Steel Hard Metal and Cast Iron ItemPackageDimensions_Height : 10.5918 centimeters ItemPackageDimensions_Length : 2.3114 centimeters ItemPackageDimensions_Width : 2.3876 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : NewShark Material : M35 5% Cobalt Coating ModelNumber : A00002 NumberOfFlutes : 1 NumberOfItems : 1 NumberOfPieces : 9 PackageLevel : unit PartNumber : A00002 ProductDescription : Advantages of HSS Step Drill Bits Drills holes of various sizes without changing bits. Minimal shocks and almost impossible to snap compared to conventional bits. Smooth hole edges, perfect to drill holes for HVAC jobs. Smoother and rounder holes. Prevents metal scurf from flying around for improved safety. Care Tips Not compatible with hammer drill. Please do not set drilling speed too high to avoid damages to cutting edge. It is recommended to oil the bit before every use. Please drill a smaller hole to make drilling smoother. The material on which you want to drill should not exceed 0.12 in. in thickness. ProductSiteLaunchDate : 2022-04-24T04:42:11.530Z Size : 4-20MM SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable SurfaceRecommendation : Stainless,Aluminum,Wood,Cast Iron,Metal,Steel SurfaceRecommendation1 : Metal SurfaceRecommendation2 : Stainless Steel SurfaceRecommendation3 : Aluminum SurfaceRecommendation4 : Copper SurfaceRecommendation5 : Alloy Steel SurfaceRecommendation6 : Cast Iron SurfaceRecommendation7 : Iron SurfaceRecommendation8 : Brass UnitCount : 1 UnspscCode : 27111700