Cobalt high speed steel (HSS). 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.
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.1.0 - 13mm Cobalt HSS drills in 0.5mm rises. The item "Sutton Jobber Heavy Duty Cobalt Drill Set D109 25 Piece Metric D109SM3" is in sale since Thursday, November 7, 2019. This item is in the category "Home & Garden\Tools & Workshop Equipment\Power Tool & Air Tool Accessories\Drill Bits". The seller is "toolsandhome" and is located in Osborne Park, WA. This item can be shipped worldwide.