DWDDL12X11/16 high-speed steel extra long drill bit
Price tier: Mid-Range
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High-speed steel drill bit with extra length for reach. Good hardness and wear resistance with lubricity from black oxide; suitable for general-purpose drilling. Some customers note durability and straightness are mixed
Highlights
- extra long reach for deep holes
- black oxide for lubricity
- round shank for versatile toolholding
Pros
- high-speed steel for general purpose
- black oxide surface for lubricity
- extra long reach
- round shank compatibility
- efficient chip evacuation when used counterclockwise
Cons
- mixed durability reports (some breakage encountered)
- varying accuracy and straightness across materials
Best For
Features
- High-speed steel tools are good for most general purpose applications
- offering a combination of hardness and toughness for wear resistance
- Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
- 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
- For general purpose drilling in applications where extra length for reach is required
- designed to perform in a broad range of materials in the iron and steel families.
