“IRWIN” COBALT HIGH SPEED DRILL BIT M-42 cobalt high speed steel for super abrasive resistance in tough metals135 degree split point reduces feed pressure for easier penetrationBulk5/16″ D
“IRWIN” COBALT HIGH SPEED DRILL BIT M-42 cobalt high speed steel for super abrasive resistance in tough metals135 degree split point reduces feed pressure for easier penetrationBulk5/16″ D