Specification Brand : LEKOMESH BulletPoint1 : 【Size】Diameter 1/4"-3/4" 1/8"-1/2" 3/16"-7/8" ; Total length 73mm/ 82mm/ 84mm; Working length 47mm/ 57mm/ 59mm; 9/ 13/ 12step drill bit, quick change hex shank. BulletPoint2 : 【118° Split Point】Automatic centering, the drill accuracy is significantly improved, chip removal effect is better, and as a unique effect on stainless steel drilling, industrial aluminum titanium nitride coating with thermal, abrasion and corrosion protection. BulletPoint3 : 【Application】Step drills include a variety of sizes suitable for use in a wide range of materials and different diameter drilling needs for aluminium, copper, wood, plastic. BulletPoint4 : 【Little Tips】The use of cutting oil or water cooling is recommended for continuous cutting to greatly extend the service life. Don't use impact and hammering mode, you can mark the holes by wrapping the tape for controling easily. BulletPoint5 : 【Recommended Machine】Corded drill, cordless drill, benchtop drill. General hand drill in the range of 2000-5000RPM, for soft materials, slow down the speed (1000RPM). Color : Black ExternallyAssignedProductIdentifier1 : 0763333932522 ExternallyAssignedProductIdentifier2 : 763333932522 FinishType : Titanium ItemName : LEKOMESH Cobalt Step Drill Bit Set - 3pcs 1/4"-3/4" 1/8"-1/2" 3/16"-7/8" Four Spiral Flute Step Drill Bit M35 with Impact Ready Unibit for Stainless Steel Metal Aluminium Copper Wood Plastic ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 9 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 3 ItemTypeKeyword : step-drill-bits Manufacturer : LEKOMESH Material1 : Cobalt Material2 : Stainless Steel NumberOfFlutes : 4 NumberOfItems : 6 PackageLevel : unit PartNumber : LE2-OH-E01 ProductDescription : JAADOEY 5pcs Step Drill Bit Set with Titanium Coating, Automatic Center Punch, for Metal, Wood, Plastic – Includes Durable Storage Case ProductSiteLaunchDate : 2024-04-01T08:06:45.296Z Size : 3pcs SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation1 : Plastic SurfaceRecommendation2 : Metal SurfaceRecommendation3 : Stainless Steel SurfaceRecommendation4 : Wood UnitCount : 3 UnspscCode : 27111700