21/64" Cobalt Taper Length Drill Bit BoltsandNuts.com and dowel pins

and dowel pins

It needs just one pass to cut through studs

Part Number D/ASTCO49/64

Shank Size 11/64"

and smoothing material

21/64" Cobalt Taper Length Drill Bit BoltsandNuts.com and dowel pinsProduct Description Cobalt drill bits are are effective in drilling tough, high tensile strength materials such as cast iron, inconel, stainless steel and titanium. They display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. These drill bits are taper length with a round shank for use in a wide range of tool holding systems. They have a 135 split point tip for fast penetration and accurate drilling.