Irwin 3016031ZR Jobber Drill Bit, 31/64 in Dia, 3-1/8 in OAL, Spiral Flute, 1-Flute, 31/64 in Dia Shank, Reduced Shank

5% cobalt and heavy-duty web construction for higher heat and abrasion resistance, strength and durability. Split point begins drilling immediately, minimizing bit walk in applications such as heavy-duty abrasive alloy metal drilling on hardened steel. Jobber length.