Overview Reviews Product Description Cobalt jobber drills offer increased hardness, toughness and better wear resistance compared to regular HSS 135° Degree split point (self-centering) which eliminates "walking" and reduces the thrust force needed Titanium nitride (TiN) coating increases wear and heat resistance while improving chip flow and higher lubricity Parabolic flute design facilitates effective chip evacuation for deeper hole drilling Suitable for steel, stainless steel Clarkson Osborn Catalog Product Videos Custom Field Diameter 8.6mm Flute length 81mm Overall length 125mm Package quantity/sold as each 5 Product Reviews Write a Review Write a Review × Clarkson-Osborn 8.6mm TiN Coated Cobalt Parabolic Flute Jobber Drill Bit DR11886 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *