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9/64" x 12" 135°HD Aircraft Extension Drill Bit (6 pack) Triumph Twist Drill Upgrade your drilling game with the 9/64" x 12" 135°HD Aircraft Extension Drill Bit by Triumph Twist Drill. Crafted from premium grade high-speed steel with a black oxide finish, this drill bit offers heavy-duty construction for exceptional durability and performance. About This Item: Specifications: Part Number: 58509 Size: 9/64" Decimal Equivalent: .1406 Flute Length: 1-3/4" Overall Length: 12" Features: Point: 135° Split Point Material: Premium Grade High Speed Steel Coating/Finish: Black Oxide Other: Heavy-Duty Construction For use in: Iron, Cast Steel, Low and Medium Carbon Steel, High Alloy Steel, Stainless and PH Tough, Medium and High-Tensile Strength Alloys About this Manufacturer: For over 60 years Triumph Twist Drill has been manufacturing hundreds of thousands of drills a week. At our 70,000 square foot facility located in Chisholm, MN, we incorporate cutting edge machinery and equipment to produce exceptional performance tools. Type: High-Speed
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🇺🇸 Ship from USA · On Agora since 2025
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