Specification Brand : KSEIBI BulletPoint1 : KSEIBI Step Drill Bits with jam-free performance feature a dual-flute design delivering up to 2X faster hole times, up to 4X longer life and up to 50% more holes per battery charge than the competition. Ideal for drilling large- and small-diameter holes in steel and plastic, these bits are optimized for cordless drills running at high speed. BulletPoint2 : Constructed with high-speed steel and black oxide M2 material for superior strength and wear resistance, making it ideal for drilling through metal, stainless steel, plastic, and other materials. BulletPoint3 : Tapered design ensures precise and accurate drilling every time, while the 1/4 inch impact shank provides a secure and stable connection to your power tools. BulletPoint4 : Industrial-grade construction ensures durability and longevity, making it a reliable tool for professional tradespeople and DIY enthusiasts alike. BulletPoint5 : Versatile drill bit with a stepped design that enables it to function as a unibit or stepdown bit, providing efficiency and convenience for a range of drilling needs. BulletPoint6 : Spiral flute design with different steps provides smooth and efficient drilling through a range of thicknesses without the need for multiple bits, making it a go-to tool for any project. Color : Blue CustomerPackageType : Standard Packaging CuttingAngleString : 135 degrees ExternallyAssignedProductIdentifier : 6972848326205 ExternallyAssignedProductIdentifier1 : 3165140415637 ExternallyAssignedProductIdentifier2 : 03165140415637 ExternallyAssignedProductIdentifier3 : 3165140067065 ExternallyAssignedProductIdentifier4 : 03165140067065 FinishType : Black Oxide,High-speed Steel,Stainless Steel,Steel GpsrSafetyAttestation : 1 Hazmat : No IncludedComponents : Step Drill Bit Set ItemName : KSEIBI Unibit 3-Piece High-Speed Steel Step Drill Bit Set - for Stainless Steel, Aluminium, Wood ItemPackageDimensions_Height : 23.0124 centimeters ItemPackageDimensions_Length : 5.6896 centimeters ItemPackageDimensions_Width : 16.4084 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : step-drill-bits Manufacturer : KSEIBI Material : High Speed Steel Stainless Steel ModelNumber : 598240 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 3 PackageLevel : unit PartNumber : 5750 ProductDescription : Generally, square hole drills need to be used with square hole drilling machines (square tenoning machines). Using square hole drill bit (installed on a square tenon machine) to make a square hole is faster than using a chisel or other manual methods, and the size of the square hole is more accurate. Material: HSS Size: inch Type D(Hole diameter) D1(Handle diameter) D2(Clamping diameter) B(Grooving depth) L(Total length) 5/16 5/16 approx 1/4 3/4 approx 2 approx 8-1/2 3/8 3/8 approx 5/16 3/4 approx 2 approx 8-9/16 1/2 1/2 approx 3/8 3/4 approx 2-3/4 approx 8-1/4 Note: The size of the clamping drill sleeve of the square tenoning machine needs to be greater than 19mm (3/4 inch) Use note: 1.In normal use, don't try to shape it at one time, but need to press and lift multiple times. This will not only help the drill bit to discharge the sawdust, drill a suitable square hole, but also protect the drill bit. 2.When using continuously for a long time, pay attention to cooling the drill bit. 3.It should be specially pointed out that: We strongly do not recommend using hand drills or ordinary drill stands (non-square tenoning machines) to match this drill bit to make square holes. ProductSiteLaunchDate : 2022-12-21T04:00:19.739Z Size : Ø 4.00 mm StreetDate : 2008-11-13T00:00:01Z Style : 3-Pcs Set SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Plastic SurfaceRecommendation1 : Wood SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Plastic UnitCount : 3 UnspscCode : 27112845