Cobalt Steel Jobbers Length Drill Bit Pack of 5 With Gold Oxide Finish Round Shank 135 Degree Notch Point For Easy Start And No Walking 11/32 Inch High Speed Steel For Drilling Through Hard Substrates
✔️ HSS cobalt, 38° parabolic flute, 135° notched point, straw oxide
The pack includes five cobalt-infused high-speed steel jobber-length drill bits sized at 11/32 inch, finished with straw oxide for reduced grinding stress. Made in the USA, these bits are designed to drill through hard substrates like stainless steel, tool steel, carbon steel, cast iron, aluminum, brass, plastic, and nickel alloys.
✅ cobalt-powder-metal HSS for longer edge life
✅ 38° helix parabolic flute for efficient chip evacuation
✅ 135° notched point improves starting and reduces walking
✅ straw oxide finish lowers grinding stress and heat
✅ round shank compatibility with many tool-holding systems
💡 What is a cobalt HSS drill bit used for in metalworking and drilling through hard alloys? This handy drill bit is built to cut through hard metals with high heat resistance and edge life. - high hardness and wear resistance for stainless steel and tool steel - efficient chip evacuation with parabolic flute - 135-degree notched point for easy starts and reduced walking - round shank for broad tool-holder compatibility
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