Specification Brand : MABLEVI BulletPoint1 : ✅Four Spiral Flute design ensures precise and accurate drilling. The four-flute step drill bit is smoother cutting than conventional two-straight flute step drills. BulletPoint2 : ✅Constructed with HSS material ensures they stay sharp and sturdy through various projects. Surface Nitride Coating can keep sharp and prolong service life. BulletPoint3 : ✅5PCS different sizes/levels of step bits that you'll appreciate the versatility and convenience they bring to your drilling tasks. Say goodbye to the hassle of switching between multiple bits. BulletPoint4 : ✅Having a solid case to keep the bits nice and sharp vs just rolling around with other metal bits. Very versatile, do-it-all kit. BulletPoint5 : ✅If you're going for smooth and efficient these will blow through most Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets at high speed like butter. BulletPoint6 : ✅Whether you're working on a big project or a quick fix, our step drill bits are your go-to tools. MABLEVI will repair and replace any defect, without charge, and without waiting. Color : Gold CuttingAngleString : 118.0 degrees ExternallyAssignedProductIdentifier : 5213013464744 ExternallyAssignedProductIdentifier1 : 652054590169 ExternallyAssignedProductIdentifier2 : 0652054590169 FinishType : Surface Nitride GpsrSafetyAttestation : 1 IncludedComponents : 3/16"-1/2" ,1/8"-1/2" ,1/4"-3/4" ,3/16"-7/8" ,3/16"-1-3/8" ItemName : MABLEVI 5 Pcs Four Spiral Flute Step Drill Bit Set, 1/8"-1-3/8" HSS Unibit Step Drill Bit, 1/4" and 3/8" Shank Step Bit for Metal, Stainless Steel, Aluminum, Wood, Plastic ItemPackageDimensions_Height : 19.8 centimeters ItemPackageDimensions_Length : 3.7 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : MABLEVI Material : High Speed Steel ModelNumber : TX003 NumberOfFlutes : 4 NumberOfItems : 5 NumberOfPieces : 5 PartNumber : XS018 ProductDescription : PRODUCTION PROCESS OF OUR STEP DRILL 1.Material Selection: The first step is to select a material suitable for the step drill. Using High Speed Steel (HSS) 2.Blank preparation: The selected material is obtained in the form of a blank, which is a cylindrical rod with a larger diameter than the final stepped drill bit. Blanks are usually obtained by processes such as forging, extrusion or bar. 3.Grinding and Shaping: The blank is then machined using a grinding operation to obtain the desired shape for the step drill. This involves using a precision grinder to remove excess material and form the flutes, steps and cutting edges of the drill. 4.Heat Treatment and Nitriding: Partially formed step bits are heat treated to increase hardness, strength and durability. The specific heat treatment process can vary depending on the materials used. 5.Finishing operations: After heat treatment and nitriding, step drills undergo final grinding and polishing operations to obtain precise dimensions, smooth surfaces and sharp cutting edges. This ensures the precision and performance of the drill. 6.Quality Control: Throughout the manufacturing process, quality control measures are implemented to ensure that stepped bits meet specified standards and tolerances. This may involve dimensional inspection, hardness testing and visual inspection. ProductSiteLaunchDate : 2023-10-30T07:51:56.389Z Size : 1/8" - 1/2" SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Pvc,Aluminum,Wood,Plastic,Metal,Steel SurfaceRecommendation1 : Plastic SurfaceRecommendation2 : Stainless Steel SurfaceRecommendation3 : Metal SurfaceRecommendation4 : Copper SurfaceRecommendation5 : Wood SurfaceRecommendation6 : Aluminum UnitCount : 5 UnspscCode : 27111700