Specification Brand : uxcell BulletPoint1 : Total Length: 115mm / 4.5"; Shank Diameter: 8.6mm BulletPoint2 : Product Name: Twist Drill Bit; Package Content: 3pcs x Twist Drill Bit BulletPoint3 : Material: HSS, Cobalt; Flute Length: 63mm / 2.5" BulletPoint4 : Bit Diameter: 8.6mm; Weight: 109g BulletPoint5 : Fearure: Straight Shank; Color: Champagne Color Color : Black CuttingAngleString : 90.0 degrees ExternallyAssignedProductIdentifier1 : 765573831832 ExternallyAssignedProductIdentifier2 : 0765573831832 FinishType : Titanium GpsrSafetyAttestation : 1 ItemName : uxcell 8.6mm Dia 115mm Length HSS Cobalt Metric Twist Drill Bit Rotary Tool 3pcs ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : brad-point-bits Manufacturer : uxcell Material : Carbide Tipped Material1 : Stainless Steel Material2 : Cobalt Material3 : High Speed Steel Material4 : Alloy Steel ModelNumber : 1989abb6-113f-4df5-a775-6986ba89a839 NumberOfFlutes : 1 NumberOfItems : 3 PartNumber : a17011600ux0429 ProductDescription : This product is made of high speed steel and cobalt material. After using full grinding process, it has stronger cutting ability and longer service life. Suitable for processing non-ferrous metals (such as copper and aluminum), non metallic and ferrous metals (such as iron, steel and stainless steel). Straight shank works in both keyed and key-less drill chucks. The advantages of full grinding drill bit:High geometric precision, strong cutting ability. Smooth surface finish, long service life. Wider using range (rough processing, finishing, semi finishing), and comes with edge clear function, make processing products have better surface finish.