Aircraft Extension Drill Bits- HSS 12″ Length Number sizes

12″ Aircraft Extension HSS Drill Bits – Wire Gauge Number Sizes

Professional-quality 12″ aircraft extension drill bits manufactured from M2 high-speed steel for extended-reach drilling applications. Available in a wide selection of wire gauge number sizes for precise hole diameters and hard-to-reach locations.

Sizes Available in 12″ length: #1 (.2280″), #7 (.2010″), #10 (.1935″), #13 (.1850″), #16 (.1770″), #19 (.1660″), #20 (.1610″), #21 (.1590″), #25 (.1495″), #27 (.1440″), #29 (.1360″), #30 (.1285″), #31 (.1200″), #35 (.1100″), #40 (.0980″)

Wire Gauge Sizes | 12″ Overall Length | M2 HSS | Aircraft Extension

Long-Reach M2 HSS Aircraft Drills

These number-size aircraft extension drill bits provide the extra reach needed when standard-length drills can’t access the work area. The 12″ overall length makes them ideal for drilling through obstructions, recessed locations, assemblies, and other confined areas.

Manufactured from M2 high-speed steel, these extended-length drills are designed for professional metalworking, fabrication, maintenance, and general-purpose drilling applications.

Features

• 12″ overall length
• M2 high-speed steel
• Available in multiple wire gauge drill sizes
• Extended reach for recessed and hard-to-access holes
• Precision number-size diameters
• Ideal for fabrication, maintenance, assembly, and metalworking
• Professional-quality aircraft extension drills

Available individually in the wire gauge number size required for your application.

Looking for a shorter drill? See our HSS 6″ aircraft extension drill bits in number sizes.