Specification Brand : HARFINGTON BulletPoint1 : Size - Cutting edge diameter: 4.2mm / 0.165"; cutting edge length: 33mm / 1.3"; shank diameter: 4.2mm / 0.165"; overall length: 75mm / 2.95"; cutting point angle: 135 degree; manufacturing technology: fully-ground BulletPoint2 : Material - M42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness. Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant. BulletPoint3 : Features - Sharp cutting edge provides fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, saving time and effort in operation. Chamfered shank design for easier clamping and less slippage during use. BulletPoint4 : Applications - The straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Do not drill quenched and tempered materials. BulletPoint5 : Notes - Choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. Please pay attention to the speed adjustment when using the electric drill. The larger the drilling size, the slower the speed requirement. Color : Gold CustomerPackageType : Standard Packaging CuttingAngleString : 135.0 degrees ExternallyAssignedProductIdentifier1 : 634301939303 ExternallyAssignedProductIdentifier2 : 0634301939303 ExternallyAssignedProductIdentifier3 : 00843724000297 FinishType : Titanium GpsrSafetyAttestation : 1 IncludedComponents : drill bit ItemDisplayDimensions_Diameter : 0.13 inches ItemDisplayDimensions_Height : 0.13 inches ItemDisplayDimensions_Length : 2.78 inches ItemDisplayDimensions_Width : 0.13 inches ItemName : HARFINGTON Twist Drill Bit 4.2mm Titanium Coated (HSS-E) M42 High Speed Steel 8% Cobalt Straight Shank for Stainless Steel Aluminum Alloy Metal ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 1.7 centimeters ItemPackageDimensions_Width : 6.2 centimeters ItemPackageQuantity : 1 ItemShape : Straight ItemTypeKeyword : jobber-drill-bits Manufacturer : HARFINGTON Material : M42 High Speed Steel (HSS-E) ModelNumber : hta221108hh0432 NumberOfFlutes : 3 NumberOfItems : 1 NumberOfPieces : 2 PackageLevel : unit PartNumber : hta221108hh0432 ProductDescription : M42 steel is a super-hard cobalt high-speed tool steel containing 8% cobalt, with good toughness, high wear resistance, high cutting efficiency, and good hot hardness (Retains hardness even at high temperatures of the cutting edge.). Nanoscale gold titanium coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant. Can greatly improves hardness, wear resistance, and reduces the coefficient of friction. Sharp cutting edge provides fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, saving time and effort in operation. Chamfered shank design for easier clamping and less slippage during use. The straight shank drill bits are widely used for drilling hardened steel, titanium alloy, stainless steel, copper, aluminum, cast iron, and other metal materials. Do not drill quenched and tempered materials. Suitable for CNC, precision drilling machines, bench drills, medium and high power hand drills. The better the equipment, the higher the processing hardness and the higher the performance. Proper use can greatly extend the working life of twist drill bits. Notice: Choose the right lubricant can facilitate cutting or cooling, make cutting easier, and improve dimensional accuracy. Due to the high speed of the hand electric drill, please pay attention to the speed adjustment when drilling. The larger the drilling size, the slower the speed requirement.