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The Busch® Inverted Cone Single-Cut Burs, ISO #050, are meticulously engineered to meet the exacting standards of professional jewelers, goldsmiths, and precision metalworkers. Renowned for their exceptional precision, durability, and cutting accuracy, these burs feature a high-performance inverted cone shape, ideal for controlled metal removal, fine seat cutting, and smooth surface finishing.
Crafted from premium tungsten vanadium steel, Busch® burs offer outstanding strength, wear resistance, and longevity—even under continuous professional use. Each bur is precision-machined to ensure a smooth, consistent cut with minimal vibration, allowing for greater control and cleaner results in detailed work.
Proudly manufactured in Germany, Busch® burs are globally recognized as the benchmark for quality in the industry.
With a standard 3/32" (2.38mm) shank diameter and a total length of approximately 1-3/4" (44.5mm), these burs are compatible with most rotary handpieces and flexible shaft machines, making them highly versatile for a range of applications in jewelry and fine metalwork.
This package includes six burs, providing ample supply for both everyday bench work and specialized tasks. Whether you're creating flat-bottomed undercuts, shaping tapered slots, or preparing stone seats in irregularly shaped bezels, Busch® Inverted Cone Burs deliver the precision, control, and reliability needed for complex and detailed craftsmanship.
Enhance your work with the trusted performance of Busch® — a name synonymous with quality, consistency, and innovation in precision tools.
Brand: Busch®
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Material: Tungsten Vanadium Steel
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Shape: Inverted Cone
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Cut Type: Single-Cut
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ISO Standard: #050
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Shank Size: 3/32" (2.38mm)
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Head Diameter: 5.00mm
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Head Length: 0.1968" (5.0mm)
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Total Length: 1-3/4" (44.5mm)
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Country of Origin: Germany
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Quantity: 1/2 Dozen (6 burs)
About This Item
Busch® Inverted Cone Single-Cut Burs (ISO #050) are crafted from premium tungsten vanadium steel for exceptional durability, cutting precision, and wear resistance. Designed for professional jewelers and metalworkers, each bur features precision-machined, evenly spaced teeth that deliver clean, smooth cuts with minimal vibration. These burs are ideal for detailed seat cutting, flat-bottom undercuts, and refined surface shaping in precious metals and other materials.
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Made in Germany to the highest industry standards
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Performs best at lower rotational speeds
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Compatible with most rotary tools, including Dremel, flex shafts, and micromotors
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Suitable for gold, silver, platinum, brass, and more
How to Use
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Insert the bur securely into the collet or chuck of your rotary tool (e.g., flex shaft, Dremel, or micromotor).
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Use light, steady pressure to avoid overheating or clogging.
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For best results, apply a lubricant such as Busch® Lube-Stik to reduce friction, prevent metal buildup, and extend tool life.
Safety Information
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Always wear eye protection when operating rotary tools.
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Do not apply excessive pressure; let the bur do the cutting.
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After use, clean the bur with a soft brush and mild soap to maintain sharpness and performance.
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Store in a dry, organized container to prevent damage and ensure safety.
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Features
High-Quality Tungsten Vanadium Steel
Engineered for superior strength, wear resistance, and long-lasting performance during continuous use.
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Precision Inverted Cone Design
Ideal for creating flat-bottomed undercuts, tapered slots, and precise seat cuts in bezels and settings—allowing clean metal removal with full control.
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Accurate, Precision-Machined Teeth
Evenly spaced, sharp cutting edges ensure smooth, chatter-free performance and consistent results across a variety of metals and materials.
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ISO #050 Head Size (5.0mm)
Optimized for detailed, professional-grade jewelry work, including fine adjustments and intricate shaping.
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Universal Shank Size – 3/32" (2.38mm)
Standardized for compatibility with most rotary tools, including flex shafts, micromotors, and Dremel-type handpieces.
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Multipack – Set of 6 Burs
Convenient pack for jewelers and metalworkers, supporting efficient workflows and minimizing downtime between projects.
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Made in Germany
Manufactured to the highest standards of quality and precision, trusted by professionals around the world.
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