PRECISION COBALT DRILLS, FRACTIONAL SIZE, BRONZE OXIDE
- JOBBER LENGTH 907 TYPE J, 135° SPLIT PT (R10CO) – manufactured to National Aerospace Standard 907 Type J. 135° split point. Used for drilling in tough, high tensile strength materials like PH stainless steel, titanium and Inconel.
- 1/2″ SHANK 118° SPLIT PT. (R56CO) – cobalt high speed steel, general purpose, 1/2″ round reduced shank, 118° self-centering split point.
