| Brand | Pan American Tool |
|---|
Check the listing for details. USA Made Short #8 (.1990) Cobalt Threaded Drill Bit 1/4-28. Condition: New. Listed at 1.25 USD. Type “D” drills are made from M42 /8% cobalt high speed steel and are manufactured to NAS 965 Type “D” specifications with 135° heavy duty split points and surface treated for drilling hard, tough high tensile strength materials.