Titanium nitride coating reduces friction and last longer, cutting edge stays sharper longer. Used in repetitive metal drilling with portable drills or stationary drill press. Jobber length.
Reviews
There are no reviews yet.
Be the first to review “Irwin 63920 Jobber Drill Bit, 5/16 in Dia, 4-1/2 in OAL, Spiral Flute, 2-Flute, 5/16 in Dia Shank, Straight Shank” Cancel reply
Reviews
There are no reviews yet.