Irwin 1-1/8 in. X 6 in. L High Speed Steel Drill Bit Straight Shank

Meet the Irwin 1-1/8 in. x 6 in. L High Speed Steel Drill Bit with a Straight Shank—a rugged, precision tool built for demanding metalworking and versatile drilling tasks. This long-reach bit is designed to punch through tough materials while maintaining accuracy and control, making it a dependable choice in any workshop.

• Cutting diameter: 1-1/8" (1.125")
• Overall length: 6"
• Flute length: 3"
• Shank diameter: 1/2"
• Shank type: Straight Shank
• Material: High Speed Steel (HSS)
• Finish: Black Oxide
• Packaging: Tube
• Quantity in package: 1

The Irwin drill bit’s high-speed steel core delivers dependable performance across metalworking tasks, while the black oxide finish reduces friction and extends bit life under repetitive drilling. The 1/2" straight shank fits a wide range of chucks, making it compatible with handheld drills and drill presses alike. With a generous 6" overall length and a 3" flute, you gain the reach you need for deep holes in metal, plastic, or wood-based projects, without sacrificing control or precision.

What makes this Irwin drill bit stand out

• Ideal for creating sizable pilot holes, deburring, or preparing hardware installations in thicker materials.
• Long reach for deep work: The 6" overall length and 3" flute let you drill into recessed areas or through longer workpieces with stability.
• Durable, versatile finish: Black Oxide protects the cutting edges and reduces heat buildup, contributing to longer bit life in demanding applications.
• Reliable compatibility: Straight 1/2" shank works with most standard chucks, from portable drills to benchtop drill presses.
• Single-piece packaging: Shipped in a protective tube to prevent damage and keep the bit ready for immediate use.

Ideal use cases

Use this Irwin drill bit for large-diameter holes in steel plates, aluminum extrusions, or other metal workpieces. It’s well-suited for fabricating structural components, mounting hardware, or creating pass-through holes for wiring and fasteners. For woodworking or plastic projects, it can handle softer materials where a wide, clean hole is required, though performance is optimized in metal with appropriate cutting speeds and lubrication.

Practical tips for best results

• Lubricate when drilling metal—cutting oil or light oil reduces heat and extends bit life.
• Secure the workpiece and use a slower drill speed to prevent grabbing and wander on tough materials.
• Begin with a small pilot hole if drilling through particularly hard or thick material to improve accuracy.
• Back the work with a sacrificial piece of scrap wood or a backing board to minimize burrs and tear-out on the exit side.

Choose the Irwin 1-1/8 in. x 6 in. L High Speed Steel Drill Bit with Straight Shank for durable performance, deep-hole capability, and reliable results across a range of common drilling tasks. This single, purpose-built bit is a practical addition to any metalworking toolkit, offering precision, longevity, and versatility in a trusted Irwin design.