Overview Reviews Product Description Cobalt stub 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 for fast penetration and accurate starting (self-centering) which eliminates "walking" and reduces the thrust force needed The short flute and overall length provide maximum rigidity, hole accuracy, and tool life Cobalt drills are suitable for harder material including alloy steels, stainless steel and other difficult to drill materials Clarkson Osborn Catalog Product Videos Custom Field Diameter #48 Flute length 11/16" Overall length 1-11/16" Package quantity/sold as each 10 Product Reviews Write a Review Write a Review × Clarkson-Osborn #48 Cobalt Stub Drill Bit DR12848 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *