4mm Cobalt Jobber Drill Bit DR90400

Clarkson-Osborn

$5.80

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Cobalt jobber drills offer increased hardness, toughness and better wear resistance compared to regular HSS

Gold oxide surface finish provides a polished finish and prevents chip building, galling and welding on a workpiece

135° Degree split point (self-centering) which eliminates "walking" and reduces the thrust force

Cobalt drills are suitable for harder material including alloy steels, stainless steel and other difficult to drill materials

Clarkson Osborn Catalog

Diameter 4mm

Flute length 43mm

Overall length 75mm

Package quantity/sold as each 10

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