Overview Precision ground from solid cobalt alloyed high speed steel for superior drilling performance. The higher cobalt alters the material characteristics by increasing the hardness and high resistance to abrasion. This type of drill is suited to drilling materials that have high toughness and tensile strength, such as cast iron, bronze, weld seams and stainless steel. Sutton Drill Bit Set 25pce Features and Benefits Industrial quality for drilling stainless steel and other tough materials 135 degree Split Point Enables accurate positioning and less drilling pressure Colour tempered finish enables identification of cobalt drills 5% cobalt formula improves abrasive & heat resistance, for increased strength at higher drilling temperatures Contents 1.0 – 13mm Cobalt HSS drills in 0.5mm rises
