66720ZR Drill Bit, 5/16 In. X 6 In., M-2 Black Oxide
Description
The Irwin 66720ZR is a 5/16-inch diameter drill bit with an extended 6-inch overall length, designed for drilling in wood, metal, and plastic. The M-2 high-speed steel construction provides strength and heat resistance for demanding drilling tasks, while the black oxide coating protects against corrosion and wear. This drill bit is ideal for reaching tight spaces, running wires and cables, and tackling projects where a standard-length bit falls short.
Whether you're a professional contractor or a DIY enthusiast, this extended-length drill bit solves common drilling challenges. The 135-degree split point geometry ensures a true start without bit walking, delivering accurate holes every time. The combination of durable materials and thoughtful design makes this bit reliable for general-purpose applications across multiple materials.
Features and Benefits
- Extended 6-Inch Length: Reaches into tight spaces and confined areas, making it perfect for drilling or running wires and cables through walls and frames.
- M-2 High-Speed Steel: Delivers strength, heat resistance, and wear resistance for demanding tasks and extended tool life.
- Black Oxide Coating: Resists corrosion and rust, protecting the bit in various environments and applications.
- 135-Degree Split Point: Eliminates bit walking and ensures a true, clean entry into the workpiece, allowing for accurate drilling every time.
- Versatile Materials: Works effectively in wood, metal, and plastic, making it a versatile addition to any toolkit.
Specifications
- Brand: Irwin
- Model: 66720ZR
- Diameter: 5/16 inch
- Overall Length: 6 inches
- Material: M-2 high-speed steel
- Coating: Black oxide
- Point Geometry: 135-degree split point
- Shank: Straight
- Flute Type: Spiral
- Applications: Wood, metal, plastic