2/26/2024 0 Comments Jobber drill bit size chartOther types of shank used include hex-shaped, and various proprietary quick release systems. ![]() For heavy duty drilling in industry, bits with tapered shanks are sometimes used. Most drill bits for consumer use have straight shanks. Twist drill bits are available in standard lengths, referred to as Stub-length or Screw-Machine-length (short), the extremely common Jobber-length (medium), and Taper-length or Long-Series (long). While longer bits can drill deeper holes, they are more flexible meaning that the holes they drill may have an inaccurate location or wander from the intended axis.
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