DescriptionBosch 9/64 In. X 2-7/8 In. Cobalt M42 Drill BitBosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy， containing 8% cobalt. These hard-core cobalt bits deliver 10X life vs. standard bits， are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability. Bits that are 1/8 In. and larger feature a split point; bits 3/16 In. and larger feature a three-flat shank， for better bit grip. These cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron， titanium and other hard or abrasive metals.FeaturesCobalt M42 drill bit – provides upgraded M42 cobalt jobber-length bits designed for durability， high heat resistance and hardened surface for stainless steel， cast iron， titanium， light-gauge metal and aluminumEnhanced M42 alloy material – contains 8% cobalt alloy that delivers 10X life vs. standard bitsHigh-heat resistant bits – withstand high-temperature applications for extended periods of timeThick web-helix design – provides additional stability in tough applicationsSurface-hardened tip – penetrates tough abrasive materialsSplit points on bits 1/8 In. and larger – allow for easy starts with no skating， eliminating the need for a center punchHeat-treated manufacturing process – helps to ensure the strength of bitsSpecificationsBrand NameBoschAssembled Weight (lbs)0.020000Bit Diameter9/64 In.Bit MaterialCobaltBit TypeTwistCalifornia Proposition 65 Warning RequiredYesCountry of OriginChinaDiameter9/64 inFlute Length (in)1.730000globalTradeItemNumber (GTIN)00000346594492 Internal Supplier Part #2610048177Internet Product Code (IPC)0D443BAD860Manufacturer WarrantyProduct Defects OnlyMinimum Chuck Size Required1/4 inPackage Contents9/64 In. X 2-7/8 In. Cobalt M42 Drill BitPackage Weight0.02Package Weight (lbs)0.02Recommended Safety EquipmentEye， ear and dust protectionShank Diameter0.140600UPC000346594492