![Drillco 350N Series Nitro 29 Piece High-Speed Steel Mechanics Length Drill Bit Set, Black and Gold Oxide Finish, Round with Flats Shank, Spiral Flute, 135 Degrees Split Point, 1/16" - 1/2" in 1/64" increments](http://www.contractortool.com/cdn/shop/products/41sPOWeF1QL_500x450.jpg?v=1700075907)
Drillco 350N Series Nitro 29 Piece High-Speed Steel Mechanics Length Drill Bit Set, Black and Gold Oxide Finish, Round with Flats Shank, Spiral Flute, 135 Degrees Split Point, 1/16" - 1/2" in 1/64" increments
Features:
- 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
- These round shank tools have flats ground onto three sides to reduce slippage of the bit when used in drill chucks
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- 29 screw machine length drill bits ranging in size from 1/16" to 1/2" in 1/64" increments
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