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#55 135° Black & Gold Oxide HD ThunderBit® (12 pack) Triumph Twist Drill About This Item: Upgrade your drilling experience with the #55 135° Black & Gold Oxide HD ThunderBit® by Triumph Twist Drill. This high-speed drill bit boasts a premium grade construction designed for heavy-duty applications. Specifications: Part Number: 12655 Size: #55 Decimal Equivalent: .0520 Flute Length: 7/8" Overall Length: 1-7/8" Features: Point: 135° Split Point Material: Premium Grade High Speed Steel Coating/Finish: Black and Bronze 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 high-quality drills like the #55 135° Black & Gold Oxide HD ThunderBit®. Our 70,000 square foot facility in Chisholm, MN, utilizes state-of-the-art machinery to ensure top-notch performance tools. Type: High-Speed Drill Bits Tags: Holemakers, Measuring System: Wire Gauge
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🇺🇸 Ship from USA · On Agora since 2025
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