4mm Cobalt Drill Bit

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(2 reviews) Write a Review
Good for drilling trunnion and rear sight holes. This heavy duty cobalt jobber drill bit will last a long time
  • 5
    Great Looking Bit

    Posted by VET on Jan 10th 2021

    Needed for build & insuring holes are right dimension!

  • 5
    Drill bit

    Posted by Earl Carter on Oct 3rd 2020

    These bits work great the best yet, and very reasonable especially when most people are taking advantage of this virus crap and robbing people