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
Return Policy & Eligibility
Return Policy
We accept returns on most items within 30 days of purchase. However, the following items are NOT eligible for return:
- Built-to-order or custom-made products (e.g., Rolair Air Compressors)
- Gas-powered equipment (e.g., Generators, Power Washers, Chainsaws)
- Pneumatic tools (e.g., Nail Guns, Paint Sprayers)
- Ladders, scaffolding, or climbing equipment
- Fall protection equipment (e.g., Lanyards, Harnesses)
- Batteries
- Used consumables or accessories (e.g., Sandpaper, Saw Blades)
- Guide rails longer than 95 inches
- Cast iron equipment (e.g., Table Saws, Drum Sanders)
- Clothing (all sales are final)
For more details on eligible items and our full return instructions, please click here to view our complete policy.
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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