Specification Brand : ss shovan BulletPoint1 : VERSATILE 3PCS SET - Includes three step drill bits with varying sizes: #1 (1/4" - 5/16" - 3/8" - 7/16" - 1/2"), #2 (1/4" - 9/32" - 5/16" - 11/32" - 3/8" - 13/32" - 7/16" - 15/32" - 1/2"), and #3 (5/16" - 3/8" - 7/16" - 1/2" - 9/16" - 5/8" - 11/16" - 3/4" - 13/16"- 7/8"). These metal drill bits come in a box so they can be storage well. BulletPoint2 : PREMIUM M35 HSS - Constructed from M35 high speed steel with 5% cobalt content, these step drill bits offer exceptional durability and superior cutting performance, even on tough materials like stainless steel (<1mm). BulletPoint3 : IDEAL FOR DIY & PROFESSIONAL USE - Whether you’re a DIY enthusiast or a professional, this step drill bit set is perfect for various applications, including drilling in sheet metal, aluminium, copper, plastic, and more. Not only can it enlarge holes, but it also deburrs, chamfers, and cutting. BulletPoint4 : ADVANCED TIALN COATING - The Titanium Aluminium Nitride (TiAlN) coating ensures high hardness and excellent wear resistance, extending the lifespan of the drill bits and maintaining sharpness for longer periods. BulletPoint5 : 118°X TYPE OPENINGS DESIGN - Designed with a spiral flute for smooth, clean drilling and enhanced chip removal. Achieve precise holes effortlessly, reducing the need for multiple drill bits. BulletPoint6 : COMPATIBLE WITH VARIOUS DRILLS - 1/4"(6.35mm) Hex shank design eliminate slipping in drill chuck, these step drill bit for metal are compatible with a range of drilling tools including bench drills press, impact drills, and hand drills, making them a versatile addition to your toolkit. BulletPoint7 : KIND TIPS - To prevent overheating and potential damage to the drill bits, always use cutting oil or spraying water during operation. Proper cooling extends the life and efficiency of the bits. Color : Golden CuttingAngleString : 30 degrees ExternallyAssignedProductIdentifier1 : 4007140001528 ExternallyAssignedProductIdentifier2 : 04007140001528 FinishType : Titanium Aluminum Nitride GpsrSafetyAttestation : 1 IncludedComponents : 3PCS Step Drill Bits, Box ItemName : 3PCS Unibit Step Drill Bit Set (1/4"-7/8"), M35 Cobalt, TiAlN Coated for Superior Durability, Spiral Cone Drill for Stainless Steel, Sheet Metal, Aluminum & Plastic ItemPackageDimensions_Height : 13.4874 centimeters ItemPackageDimensions_Length : 5.6896 centimeters ItemPackageDimensions_Width : 10.1092 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : SS SHOVAN Material : High Speed Steel with Cobalt Alloy Material1 : High Speed Steel Coblat M35 Material2 : TiAlN Coating ModelNumber : step-M35 NumberOfFlutes : 2 NumberOfItems : 3 NumberOfPieces : 3 PackageLevel : unit PartNumber : step-M35 ProductDescription : 3PCS Step Drill Bits Set 1/4 inch Shank, High Speed Steel M35 Metal Drill Bits for Drilling Stainless Steel, Aluminium ProductSiteLaunchDate : 2023-12-01T07:20:03.215Z Size : 1/8"-7/8"(3PCS) SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Metal SurfaceRecommendation1 : Metal SurfaceRecommendation2 : Plastic SurfaceRecommendation3 : Wood SurfaceRecommendation4 : Concrete SurfaceRecommendation5 : Masonry SurfaceRecommendation6 : Stone UnitCount : 3 UnspscCode : 27111700