Jobber Length Drill Bits

Black & Gold Bits

  • Industrial Quality High Speed Steel

  • Precision grounded from solid for true, round holes when cutting

  • Vacuum heat-treated to achieve hardness of HRc 64-66

  • 135 degree Split Point prevents and reduces wobbling and "walking"

  • Sold in packs of 6 or 12

Cobalt Bits

  • Industrial Quality COBALT Steel makes these drill bits more durable and stronger than the Black & Gold Jobber bits

  • Precision grounded from solid for true, round holes when cutting

  • Vacuum heat-treated to achieve hardness of HRc 66-68

  • 135 degree Split Point prevents and reduces wobbling and "walking"

  • Sold in packs of 6 or 12

Stone Tools 

13095 Park Street, Santa Fe Springs, CA 90670

Tel: 562-906-8819                  Fax: 562-906-8828

E-mail: info@stonetools.com

2016 Stone Tools. All Rights Reserved

Designed by: CF 06-15-2016