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Republic 307L Black Oxide Drill Bit Set (A-Z)
The Republic 307L is a general-purpose, jobber-length drill bit set designed for reliable performance in a wide range of standard drilling applications. Constructed from high-speed steel and treated with an abrasion-resistant black oxide finish, these drill bits are built to deliver consistent durability and extended tool life. The comprehensive 26-piece set encompasses letter sizes A through Z, conveniently and securely organized in a sturdy metal index case for quick size identification and field protection.
Key Specifications and Features
- Model: 307L
- Bit Type: Jobber-Length
- Point Angle: 118° (General Purpose)
- Material: High-Speed Steel (HSS)
- Surface Finish: Black Oxide for improved abrasion resistance and lubricity
- Size Range: Letter sizes A through Z
- Piece Count: 26 Drill Bits
- Storage: Includes a heavy-duty metal index case
Frequently Asked Questions
What drill bit sizes are included in the Republic 307L set?
This 26-piece jobber-length set includes standard letter sizes A through Z, completing the full letter-gauge range.
What is the advantage of a 118-degree point angle?
A 118-degree point is the standard angle for general-purpose drilling. It provides an optimal balance of cutting-edge durability and penetration capability across wood, metal, and plastics.
How does the black oxide finish benefit the drill bits?
The black oxide surface treatment increases abrasion resistance, reduces friction, and retains lubricants better than untreated steel, ultimately reducing heat buildup and extending the lifespan of the bits.