Drillco 400N Series Nitro 29 Piece High-Speed Steel Heavy-Duty Jobber Drill Bit Set, Black and Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degrees Split Point, 1/16″ – 1/2″ in 1/64″ increments Online now
$108.41Original price was: $108.41.$27.10Current price is: $27.10.
Drillco 400N Series Nitro 29 Piece High-Speed Steel Heavy-Duty Jobber Drill Bit Set, Black and Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degrees Split Point, 1/16″ – 1/2″ in 1/64″ increments
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
Round shanks allow use with a wide variety of toolholding systems
When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
29 jobber length drill bits ranging in size from 1/16″ to 1/2″ in 1/64″ increment
