" DRL " 440-N-526 DRILLCO

DRL 440-N-526

LETTER "Z" NITRO JOBBER DRILLBITS

"Z" 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.