Letter Industrial Length Drill Bit by Super Primalloy

Robust Super Primalloy construction ensures durability. Multi-phase cryogenic treatment at -300°F enhances molecular structure, reduces stress, and boosts longevity. 'N' series nitride treatment hardens cutting surfaces for superior edge retention and faster hole creation. Heavy-duty 135° split point design simplifies center punching and improves penetration in high-tensile materials. Cryogenic treatment reduces tool brittleness, extending life. Dark gold surface treatment offers excellent lubricity for increased drill life. Modified flute and web design boosts strength and durability. High-quality 'M' series alloy steel construction provides exceptional wear resistance and longevity. Flatted shanks minimize slippage in the drill motor and protect the drill and chuck. Proudly made in the USA.

• Robust Super Primalloy Construction: Built to last with our proven heavy-duty design
• Multi-Phase Cryogenic Treatment: Deep thermal cycle alters molecular structure, enhances durability
• "N" Series Nitride Treatment: Case-hardened cutting surfaces for superior edge retention and faster hole creation
• Heavy-Duty 135° Split Point: Eliminates center punching, allows easier penetration in high-tensile materials
• Stabilized Molecular Structure: Cryogenic treatment reduces brittleness, extends tool life
• High Lubricity Surface Treatment: Dark gold surface for increased drill life
• Modified Flute & Web: Enhanced strength and durability
• Super-Tough 'M' Series Alloy Steel Construction: Exceptional wear resistance and longevity
• Flattened Shanks: Prevents slippage in the drill motor, safeguards drill and chuck
• Proudly Made in the U.S.A