Specification Brand : suwinus BulletPoint1 : 【31 Step Sizes】13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch) BulletPoint2 : 【HSS Titanium Coating】High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the frictionand drills with less heat , runs cooler. BulletPoint3 : 【Two-flute Spiral Grooved Design】Two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. BulletPoint4 : 【Multipurpose】Perfect for home DIY, and general building/ engineering use such as drilling holes in wood,plastic, aluminum, copper,iron sheet and many other types of sheet metal. BulletPoint5 : 【6 months After Sales Warranty】If you are not fully satisfied with our product for any reason, please contact us for 100% refund or replacement. BulletPoint6 : Wide Range of Applications- Designed for versatility, this step drill bit is perfect for creating clean, precise holes in stainless steel, copper, brass, aluminum, plastic, and laminate materials. Whether for professional or DIY projects, this step drill bit is a must-have. BulletPoint7 : Built for Efficiency and Longevity- Combining high-grade M35 cobalt steel, a durable TiAlN coating, and a 4-flute design, this step drill bit delivers exceptional performance and durability, even under demanding conditions. Color : Multi CuttingAngleString : 118 degrees FinishType : Titanium IncludedComponents : hole saw ItemName : Suwinus HSS Step Drill Bit 3Piece Set Titanium Coated Spiral Grooved Step Drill Bit HighSpeed Steel Step Drill Bit for for Sheet Aluminium Metal Wood Hole Drilling HSS Multi Size Hole Stepped Up ItemPackageDimensions_Height : 9.906 centimeters ItemPackageDimensions_Length : 2.2098 centimeters ItemPackageDimensions_Width : 7.6962 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : Suwinus Material : alloy Material1 : High Speed Steel Material2 : Alloy Steel ModelNumber : SW-SXZT-3P NumberOfFlutes : 2 NumberOfItems : 3 NumberOfPieces : 3 PartNumber : SW-SXZT-3P ProductDescription : HSS Step Drill Bit 3-Piece Set ProductSiteLaunchDate : 2022-03-11T00:29:17.709Z Size : 1*1*5.5cm Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Wood,Metal,Steel UnitCount : 1 UnspscCode : 27111700