Highcool 3PCS 1 Inch Cobalt Drill Bits HSSCO Speed Steel M35 &D Drill Bits for Steel 1/2" Reduced Shank 6" OAL 135-Degree Split Point

M35 HSS Cobalt -speed steel drill bits are good for most purpose applications, offering combination of hardness and toughness for wear resistance. And polished adds lubricity and creates small pockets the surface of the that act to hold coolant near the. 135-Degree split point for centering and alignment, and round shanks permit use with of toolholding . When operated in counterclockwise direction (right-hand cut) spiral flutes remove chips and debris from the cut to clogging. Suitable for use in cast iron, zinc alloy, copper, steel and so .