1/2-Inch x 12-Inch Black & Gold HSS Aircraft-Length Twist Drill Bit – 135° Split Point

Drill deep with confidence using the 1/2" x 12" Black & Gold HSS Aircraft-Length Twist Drill Bit, engineered for extended reach and professional-grade performance. Made from high-speed steel, this bit delivers durability and precision for drilling in both metal and wood applications.

The 135° split point tip ensures fast starts with no walking, while the parabolic flute design boosts chip ejection for cleaner, faster drilling. Its 31° helix reduces the aggressiveness of the cut for greater control, and the black and gold oxide coating provides enhanced wear resistance and corrosion protection—keeping your bit in top condition job after job.

Key Features:

Extended 12-inch aircraft length – Perfect for deep-hole or hard-to-reach drilling.

135° split point – Drills on contact, reduces walking.

Parabolic flute design – Improves chip ejection in wood and metal.

31° helix angle – Provides controlled cutting performance.

Black & gold oxide coating – Boosts wear resistance and rust protection.