Specification Brand : THINKWORK BulletPoint1 : ENHANCED DURABILITY: Our industrial-grade step drill set & countersink drill bit set is meticulously crafted from high-quality alloy steel and undergoes multiple manufacturing processes. Each drill bit is carefully inspected at the factory to ensure superior quality and longevity. BulletPoint2 : IMPROVED STABILITY: Unlike ordinary step drills that often suffer from deflection during cutting, our four-flute step drill bit provides exceptional stability. This feature enhances accuracy and cutting speed, making it perfect for stainless steel drilling. In fact, it offers a significantly longer service life compared to regular step drills. BulletPoint3 : NITRIDING BIT KIT: Our 10 Pcs nitriding step and countersink bits set includes a range of sizes to cater to various drilling needs. The set comprises step bits with diameters of /16"-1/2" (6 steps), 1/8"-1/2" (13 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps), and 3/16"-1-3/8" (19 steps). Countersink Drill Bits sizes1/4'', ”3/8'', 1/2'', 5/8'', 3/4''. BulletPoint4 : VERSATILE DRILLING CAPABILITY: With its powerful drilling capability, our step drill is suitable for piercing holes in various materials, including thin metal, copper, aluminum, iron, carbon steel, wood, and plastic. It's an essential addition to any DIY enthusiast's toolbox and can be utilized for a wide range of household projects. BulletPoint5 : USER-FRIENDLY DESIGN: Our step drill bits feature laser-engraved step sizes, ensuring clear visibility and eliminating concerns about wear and tear during use. This design element enhances convenience and accuracy, making the drilling process easier and more efficient. BulletPoint6 : DEDICATED CUSTOMER SERVICE: While our products undergo stringent quality inspections, unforeseen issues caused by accidental factors may occur. In such cases, we are committed to providing professional customer service. If you encounter any quality problems, please contact us via Amazon, and we will promptly replace the defective item with a new one. BulletPoint7 : Magnetic BulletPoint8 : Made in Japan BulletPoint9 : RoHS 10 Substances Color : Black(Spiral Grooved) CompatibleFastenerDescription : 0.25 inches CustomerPackageType : Standard Packaging CuttingAngleString : 135 degrees DriveSystem : Outside Hexagon ExternallyAssignedProductIdentifier : 6975045667942 ExternallyAssignedProductIdentifier1 : 799670742937 ExternallyAssignedProductIdentifier2 : 0799670742937 FinishType : Black Oxide GpsrSafetyAttestation : 1 IncludedComponents : 5 Pcs Step Drill Bits & 5 Pcs Countersink Drill Bits ItemDisplayDimensions_Height : 2.5 centimeters ItemDisplayDimensions_Length : 7.6 centimeters ItemDisplayDimensions_Width : 16.3 centimeters ItemDisplayWeight : 38 grams ItemLength : 3.2 inches ItemName : THINKWORK 5 Pcs Four Spiral Flute Step Drill Bit Set & 5 Pcs Countersink Drill Bits with Tool Box, Nitriding HSS Drill Bits for Metal, Aluminum, Wood, Plastic ItemPackageDimensions_Height : 23.0124 centimeters ItemPackageDimensions_Length : 5.207 centimeters ItemPackageDimensions_Width : 16.2052 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : THINKWORK Material : High Speed Steel Material1 : Stainless Steel Material2 : High Speed Steel Material3 : Brass ModelName : SS1620 ModelNumber : W6172 NumberOfFlutes : 4 NumberOfItems : 10 NumberOfPieces : 10 PartNumber : W6172 ProductDescription : Introducing our Four Spiral Flute Step Drill Bit Set & Countersink Drill Bits, designed for precision and durability in drilling tasks. With exceptional stability and multiple cutting edges, effortlessly create clean, precise holes in various materials. Crafted from premium alloy steel, these bits are built to last. The laser-engraved size markings ensure easy identification, and the convenient storage case keeps your bits organized. Upgrade your drilling experience with this versatile and reliable set. ProductSiteLaunchDate : 2023-11-07T07:20:13.152Z Size : 1/8"- 1/2" StreetDate : 2018-02-19T00:00:01Z Style : 16 Pack Countersink Drill Bit Set SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Thin Metal,Aluminum,Plastic,Wood SurfaceRecommendation1 : Plastic SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Stainless Steel SurfaceRecommendation4 : Wood UnitCount : 5 UnspscCode : 27111700