Champion Cutting CS6X #1 6" Aircraft Extension Drill Bits 135 degree split point Black oxide treated HSS Single piece construction. Flute length is the same as a standard jobber drill
Champion - Bit Stub - 1/2 - Cobalt Referred to as screw machine drills Short flute; overall length increases their rigidity, resulting in better hole accuracy and extended tool life
Black and Gold MBG29BB Drill Bit Set - 29 Pcs. Industrial grade, heavy duty drill bits for metal, stainless steel, and other applications Jobber length, 135° Split Point