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" DRL " 440-N-511 DRILLCO

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LETTER "K" NITRO JOBBER DRILLBIT-DRL440N511>
Description

DRL 440-N-511

LETTER "K" NITRO JOBBER DRILLBIT

 

"K" NITRO HEAVY DUTY JOBBER LENGTH DRILL
BRONZE & BLACK 135 DEGREE SPLIT POINT
MADE IN USA

 

Manufactured from a premium grade of M-7N molybdenum high speed steel.˜ the Nitro Heavy Duty 135 degree Split Point drill with a Nitride surface treatment that give a hard protective layer to the drill (increases hardness without increasing brittleness) which is measurably harder than high speed steel.˜ Body and clearance are gold and black surface treated for maximum lubricity.˜ Recommended for use in stainless steel and other hard metal drilling.

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