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#57 135° Black & Gold Oxide HD ThunderBit® (12 pack) Triumph Twist Drill About This Item: Upgrade your drilling experience with the #57 135° Black & Gold Oxide HD ThunderBit® from Triumph Twist Drill. This premium grade high-speed steel drill bit is designed for heavy-duty construction, featuring a 135° split point for precision drilling. The black and bronze oxide coating ensures durability and longevity, making it ideal for various materials including iron, cast steel, and high-tensile strength alloys. Specifications: Part Number: 12657 Size: #57 Decimal Equivalent: .0430 Flute Length: 3/4" Overall Length: 1-3/4" 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: Discover the quality craftsmanship of Triumph Twist Drill, a reputable manufacturer with over 60 years of experience in producing top-notch tools. Based in Chisholm, MN, our state-of-the-art facility ensures the
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🇺🇸 Ship from USA · On Agora since 2025
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