Specification Brand : DURATECH BulletPoint1 : Durable & Sturdy Material: High-speed steel and titanium coating ensure excellent drilling durability and sharpness, which can reduce friction and lower operating temperature. Great for metal, wood, and plastic panels, easy to countersink. Suitable for home DIY and general construction/engineering use BulletPoint2 : Double Slot & Triple Shank: The split point tip is 118 degrees to increase wear resistance. The dual-fluted design provides faster, smoother, accurate cuts and keeps metal shavings from flying around for added safety; the triple-flat shank fits securely into the power tool chuck, eliminating slippage BulletPoint3 : Automatic Center Punch: Delivers an automatic, high-impact, spring-loaded strike when pressed against a surface, adjustable cap regulates striking force BulletPoint4 : Sturdy & Stackable Case: Store in a sturdy plastic box with a transparent lid, you can find the drill at a glance. The storage box is designed to be stacked and can be stacked and combined with other boxes at will, making it easy to carry and store BulletPoint5 : Step Drill with Multiple Drill Sizes: 5PCS-50 Sizes - Drill #1 (6 Steps): 3/16"-1/2"; Drill #2 (9 Steps): 1/4"-3/4 ". Drill #3 (13 steps): 1/8"- 1/2". Bit #4 (Grade 12): 3/16"- 7/8". Drill #5 (10 steps): 1/4" - 1-3/8" BulletPoint6 : Quad Helical Flutes: The drill bit features four spiral flutes to improve drilling efficiency and reduce friction. Not only can this drill work on metal, but it also performs well on stainless steel, plastics, and a variety of other materials, making it less likely to clog when drilling and requiring no removal of impurities. CuttingAngleString : 118.0 degrees ExternallyAssignedProductIdentifier1 : 820909793861 ExternallyAssignedProductIdentifier2 : 0820909793861 FinishType : Titanium Nitride GpsrSafetyAttestation : 1 IncludedComponents : M35 1/8"-1/2" ItemName : DURATECH 6-Piece Step Drill Bit Set with Automatic Center Punch, 50 Sizes in 5 High Speed Steel, Titanium Coated, Double Flute Cutting Blades Step Drill Bits for Metal, with Storage Case ItemPackageDimensions_Height : 18.8976 centimeters ItemPackageDimensions_Length : 5.4102 centimeters ItemPackageDimensions_Width : 11.5062 centimeters ItemTypeKeyword : step-drill-bits Manufacturer : Hangzhou Great Star Industrial Co.,LTD. Material : High Speed Steel ModelNumber : 1/8"-1/2" NumberOfFlutes : 2 NumberOfItems : 1 PartNumber : DT105113 ProductDescription : DuraTech 6 PCS Step Drill Bit and Automatic Center Punch Set with Tough Case Small ProductSiteLaunchDate : 2022-11-14T09:04:53.255Z Size : 1/8" - 1/2" SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Metal SurfaceRecommendation1 : Plastic SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Wood SurfaceRecommendation4 : Wood UnitCount : 6 UnspscCode : 27112700