IRWIN 62116 1/4″ x 12″ Drill Bit 135x

The IRWIN 62116 1/4″ x 12″ Aircraft Extension Drill Bit is built for deep drilling and tight-access work in professional trades. With an overall length of 12 inches and a 1/4-inch diameter, this extra-long bit is engineered for those hard-to-reach spots where standard drill bits fall short. Manufactured from durable M-2 high speed steel and finished with black oxide for added wear resistance, this bit holds up under heat and repeated use in metal, wood, PVC, and plastic drilling applications. The 135° split point reduces walking and allows for faster starts, making it ideal for precision drilling in jobsite conditions.

This long drill bit is especially suited for applications like electrical work, HVAC installations, woodworking, and automotive repairs where cable routing or pilot hole drilling in confined spaces is needed. Its extended reach helps users maintain straight alignment while drilling through studs, frames, or other obstacles—improving accuracy while saving time.

IRWIN 62116 1/4″ x 12″ Drill Bit 135x At a Glance

• 12-Inch Length for Extended Reach: Drills deeper and accesses hard-to-reach areas where standard-length bits can’t fit
• 135° Split Point Tip: Starts drilling on contact with less walking and more control, especially on metal and plastic
• M-2 High Speed Steel Construction: Offers strength, durability, and heat resistance for repeated drilling in various materials
• Black Oxide Finish: Adds wear resistance and improves the lifespan of the bit in demanding environments
• Spiral Flute Design: Efficiently removes chips to maintain cleaner holes and reduce heat build-up
• Straight Shank: Compatible with standard 3-jaw chucks, ensuring wide tool compatibility
• Single Flute Point Style: Optimized for accurate, clean entry, especially in precision-demanding applications

Markets

• Electrical Contractors Ideal for running wire through studs or joists where an extended bit length is needed to maintain alignment and reach.
• HVAC Technicians Useful when drilling pilot holes in framing or duct areas where space is limited and precision is required.
• Woodworkers Great for creating deep holes in woodworking projects without losing accuracy or needing extensions.
• Automotive Repair & Upfitters Suitable for routing wires or drilling through vehicle panels in tight or awkward locations.
• Municipal Maintenance Crews Effective for utility access, infrastructure maintenance, or field installations where long reach is a factor.
• Telecom & Low-Voltage Installers Helpful for cable routing and bracket mounting in confined wall or ceiling cavities.
• Construction Crews Supports general-purpose drilling on the jobsite, especially when structural elements block direct access.

Electricians, HVAC technicians, maintenance teams, and builders benefit from using the IRWIN 62116 due to its long-reach profile, fast-starting tip, and reliable performance on multiple materials. Whether you’re pulling wire through studs or drilling into metal brackets hidden deep in assemblies, this drill bit gets the job done without unnecessary tool changes or bit extension

IRWIN 62116 1/4″ x 12″ Drill Bit 135x Features

• 13 Amp motor
• 9,000 RPM
• Anti-Rotation E-CLUTCH® System activates in less than a tenth of a second when a pinch/stall is detected, shutting down the motor.
• Dust Ejection System technology ejects damaging dust and debris particles that enter through the air intake vents.
• Power Loss Reset® helps prevent accidental restarts following a power disruption when the tool is left in the “on” position.

IRWIN 62116 1/4″ x 12″ Drill Bit 135x Specifications

• Drill Diameter: 1/4 inch
• Overall Length: 12 inches
• Material: High Speed Steel (M-2 HSS)
• Finish: Black Oxide
• Shank Type: Straight
• Cutting Angle: 135°
• Point Style: Split Point
• Flute Type: Spiral
• Flutes: Single Flute
• Surface Compatibility: Metal, Wood, PVC, Plastic (Polyvinyl Chloride)

Why Customers Choose the IRWIN 62116 1/4″ x 12″ Drill Bit 135x

Tradespeople turn to the IRWIN 1/4″ x 12″ aircraft drill bit when a standard bit just won’t cut it—literally. Whether you’re “fishing wire” through multiple studs or drilling into a tight metal frame, this bit delivers the reach and control you need. Known among pros as an “aircraft extension bit” or a “long shank drill bit,” it’s a go-to tool when precision matters and space is limited. Its split point design reduces wandering on curved or uneven surfaces, making it a trusted option in both rough-ins and finish work. From renovations to repairs, this long 1/4-inch bit makes light work of deep or awkward drilling tasks while keeping the hole clean and aligned. For serious trades that rely on getting the job done right the first time, IRWIN’s black oxide aircraft bit is built to perform.