Best USA-made cobalt bit. Its case rests on drill America is US manufactured - machinist community preference for domestic tooling and m42 cobalt specification. One caveat, higher per-bit price than import cobalt bits.
✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read
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Best USA-made cobalt bit. Its case rests on drill America is US manufactured - machinist community preference for domestic tooling and m42 cobalt specification. One caveat, higher per-bit price than import cobalt bits.
USA manufactured
M42 cobalt
Machinist grade
✓ Pros
Drill America is US manufactured - machinist community preference for domestic tooling
M42 cobalt specification
✕ Cons
Higher per-bit price than import cobalt bits
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Where the Drill America 1/4 HSS Cobalt Drill Bit ranks
