The Irwin 21-Piece Black & Gold Oxide TurboMax Drill Bit Set (73149) is a comprehensive collection of jobber-length bits engineered for professional performance and efficiency. This set, model number 73149, is designed to meet the demands of a wide range of drilling tasks, particularly in metal. Each bit is crafted from M-2 high-speed steel, a material known for its excellent strength and heat resistance, which allows it to maintain a sharp edge even under high-stress conditions. The black and gold oxide finish provides an extra layer of protection, offering maximum corrosion resistance and contributing to a longer tool life.
KEY FEATURES AND BENEFITS:
Self-Centering TurboMax Tip: Precision-ground tip prevents bit walking, allowing for accurate hole placement and faster drilling, saving time on projects.
Corrosion-Resistant Finish: Black and gold oxide coating provides excellent protection against rust and wear, extending drill bit life.
High-Speed Steel Construction: M-2 high-speed steel offers strength, heat resistance, and wear resistance, maintaining sharpness through demanding use.
Secure Chuck Grip: Bits 3/16″ and larger feature a three-flatted shank to prevent slipping in keyless chucks, ensuring consistent performance.
Comprehensive Set: Includes 21 fractional sizes from 1/16″ to 3/8″ for versatile drilling applications.
SPECIFICATIONS:
Model Number: 73149
Brand: Irwin
Pieces Included: 21
Material: M-2 High-Speed Steel (HSS)
Coating: Black and Gold Oxide
Shank Type: Straight shank with three flats on bits 3/16″ and larger
Packaging: Metal Index Case
Included Sizes: 21 fractional drill bits from 1/16″ to 3/8″ in 1/64″ increments
HOW TO USE:
Select the Right Bit: Choose the correct drill bit size for your project from the wide range of fractional sizes.
Secure the Bit: Insert the drill bit into your drill’s chuck. For bits 3/16″ and larger, align the three-flatted shank for a secure, non-slip grip.
Mark and Position: Mark the precise hole location and position the TurboMax tip directly on the mark. The self-centering tip prevents wandering.
Begin Drilling: Start at a slow speed to engage the material, then increase speed as needed with steady, even pressure.
Clear Debris: Periodically remove the bit to clear chips and debris, especially when drilling deep holes or soft materials.
BENEFITS OF USING IRWIN 21-PIECE BLACK & GOLD OXIDE TURBOMAX DRILL BIT SET (73149):
Improved accuracy with the self-centering TurboMax tip, reducing the need for pilot holes.
Enhanced drilling efficiency with faster speeds enabled by advanced tip geometry.
Versatile set suitable for drilling metal, wood, plastic, and more.
Durable construction with M-2 high-speed steel and protective oxide finish for long tool life.
Reliable, slip-resistant grip from three-flatted shanks on larger bits ensures safety and consistent operation.
FEATURES:
M-2 High-Speed Steel construction for excellent wear and heat resistance.
Black and gold oxide finish providing maximum corrosion protection.
Self-centering TurboMax tip engineered to prevent bit walking.
Three-flatted shank on larger bits to reduce slipping in the chuck.
Fractional sizes from 1/16″ to 3/8″ in 1/64″ increments for versatility.
Durable metal index case for organized storage and easy transport.
