Specification Brand : MICHIGAN DRILL BulletPoint1 : Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys BulletPoint2 : Round shanks allow use with a wide variety of toolholding systems BulletPoint3 : When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging BulletPoint4 : Heavy web 8 percent cobalt content permits use at higher speeds in hardened stainless heat treated and high temperature alloys BulletPoint5 : 1/2-inches standard shank diameter Color : Multi Configuration : configuration CustomerPackageType : 1 CuttingAngleString : 135.0 degrees ExternallyAssignedProductIdentifier1 : 695499283319 ExternallyAssignedProductIdentifier2 : 0695499283319 FinishType : cobalt GpsrSafetyAttestation : 1 IncludedComponents : 2Pcs Reduced Shank Drill Bit ItemName : Michigan Drill 303C Series Cobalt Steel Reduced Shank Drill Bit, Round Shank, Spiral Flute, 135 Degrees Notched Point, 3/4" Size (Pack of 1) ItemPackageDimensions_Height : 2.54 centimeters ItemPackageDimensions_Length : 16.764 centimeters ItemPackageDimensions_Width : 2.54 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : reduced-shank-drill-bits Manufacturer : Michigan Drill Corporation Material : Cobalt Steel Material1 : Blend Material2 : Blend Material3 : Blend Material4 : Blend Material5 : Blend MfgSeriesNumber : 303C ModelNumber : 303C 3/4 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : 303C 3/4 Pattern : Solid ProductDescription : Feature: Sharp and spiral cutting edge provides neat and smooth cuts. Black Oxide Finish - Black oxide surface treatment holds up better lubrication for smoother drilling. Wide application for drilling of stainless steel, die steel, I-steel, ordinary steel, Angle iron, rubber, plastic, aluminum, copper, wood, and other materials. Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals. Increased use of water lubrication will extend drill bit life. Use tips: 1, if the drill material is hard, first use a 3-6mm drill bit to make a small hole, and then use a large drill bit to reexpand the hole. 2, drilling hard drill speed should be between 80-120 effect is good, the greater the number of RPM can not drill down, burn the drill bit. 3, because stainless steel contains more alloy components, its hardness and mechanical properties are higher, the need to apply enough pressure and motor power when drilling with a hand drill is large enough, it is easy to use a bench drill. 4, When drilling with cobalt head with equal handle, add water or coolant to cool the drill to prevent the drill bit from burning out..