b'HaasTooling.comHolemakingExplore NowCobalt Drills & MoreCobalt Drill OverviewJobber-length drills are the most common, general-purpose drills. They featureAPPLICABLE WORKPIECE MATERIALSHSSCO8a long length compared to their diameter, and offer a good balance of strength and accuracy for drilling in a wide range of materials. Available in fractional, letter,P - STEEL number, and metric sizes. M - STAINLESS STEEL These drills are constructed of 8% cobalt high-speed steel (HSSCo8), which is harderK - CAST IRON than standard high-speed steel (HSS), and provides better wear resistance and higherN - ALUMINUM / NON-FERROUS hardness. They feature a 135 split point* and 30 flute helix, and are suitable for drilling steel and stainless steel, with secondary applications in cast iron, aluminum,S - HIGH-TEMP ALLOYS and high-temp alloys. The TiN (Titanium Nitride) coating adds lubricity, andH - HARDENED METALS increases hardness and heat resistance, allowing these drills to run at higher speeds and feeds than HSS.Cobalt drills are less expensive than carbide, are less prone to chipping, and may be resharpened to extend their life.NOTE: A spot drill is recommended to ensure accurate hole locations.* Normal point below 1/16" (1.6mm).2.1. 3.4. 5.Great price and qualityThese drill bits are well made and hold up great to everyday use, and replacement bits are affordable. I will continue to purchase my drill bits from Haas.Tristan Jones 06/07/20231. Cobalt Jobber Drill Sets | 2. Cobalt Drill | 3. Spot Drill4. Center Drill | 5. Countersink 34 | Get up to -8% with Winners Circle'