Specification Brand : KEWAYO BulletPoint1 : This bits should use the bench drill , it is easy to shake and it will affect the chamfering effect if you use the hand drill BulletPoint2 : Chamfer range: 2 to 5mm, 5 to 10mm, 10 to 15mm, 15 to 20mm; Shank diameter: 6mm, 8mm, 10mm, 12mm; Head diameter: 10mm, 14mm, 21mm, 28mm BulletPoint3 : Application: Suitable for cutting thin metal, wood,plastic and thin iron plate hardness less than 25 degrees BulletPoint4 : Use: 90 degree angle on the point for sharp and precise countersinking, used for workpiece circular aperture chamfering or cone hole BulletPoint5 : Material: Made of high speed steel, titanium coated BulletPoint6 : 【 Built to Last】 Crafted from high-quality, durable materials, these countersink bits feature sharp cutting edges for smooth drilling. The robust construction ensures they withstand frequent use. Color : 5pcs 15-35mm CuttingAngleString : 90.0 degrees ExternallyAssignedProductIdentifier : 8425553098977 ExternallyAssignedProductIdentifier1 : 772324590023 ExternallyAssignedProductIdentifier2 : 0772324590023 FinishType : Titanium GpsrSafetyAttestation : 1 IncludedComponents : Countersink Drill Bits:3/16”x1/2”, 1/8”x3/8”, 11/64”x1/2” 5/32”x3/8” 9/64”x3/8” ItemName : KEWAYO Titanium Countersink Bits - 4Pc 90° Set for Wood/Metal ItemPackageDimensions_Height : 9.6012 centimeters ItemPackageDimensions_Length : 3.4036 centimeters ItemPackageDimensions_Width : 6.9088 centimeters ItemPackageQuantity : 1 ItemShape : Square ItemTypeKeyword : countersink-bits Manufacturer : KEWAYO Material : High Speed Steel ModelNumber : K-4-1 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : K-4-1 ProductDescription : This 4 pieces Countersink and Deburring Tool Set is ideal for cutting through metal, wood and plastic quickly and easily.