4-32mm Metric 5% Cobalt Step Drill Bit for Stainless Steel and Hard Metal (15 Steps)

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About This Premium M35 5% Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life. Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic. This Cobalt Step Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes. [4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm) Overview Material : Cobalt, Cobalt Steel Cutting Diameter : 4-32 Millimeters Finish Type : Brass Shank Type : Straight Cutting Angle String : 135 Degrees Show more