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The Busch® Inverted Cone Single-Cut Burs, ISO #031, are expertly engineered to meet the high standards of professional jewelers, engravers, and metalworkers. Renowned for their superior precision and long-lasting performance, these burs feature an inverted cone shape designed to facilitate controlled metal removal, precise seat cutting, and clean, detailed finishing. Crafted from high-quality tungsten vanadium steel, Busch Burs deliver outstanding strength and resistance to wear, ensuring a reliable and uniform cut with every use. Manufactured in Germany, they represent the pinnacle of quality and craftsmanship in the industry.
Featuring a standard 3/32" (2.38mm) diameter shank and measuring approximately 1-3/4" (44.5mm) in length, these burs are compatible with most rotary tools used in fine metalwork. Each pack contains six burs, offering sufficient quantity for extended use or multiple projects. Ideal for tasks such as creating flat-bottomed undercuts, shaping tapered slots, and forming seats in irregularly shaped bezels, the Busch® Inverted Cone Burs provide the precision and control essential for intricate jewelry and metalwork applications. Elevate your work with the unmatched performance and reliability of the Busch® brand.
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: #031
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Shank Size: 3/32" (2.38mm)
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Head Diameter: 3.10mm
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Head Length: 0.1220" (3.10mm)
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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 Burs are crafted from premium tungsten vanadium steel for superior strength, sharpness, and cutting performance. Each bur features precision-machined, evenly spaced teeth that deliver smooth, accurate, and consistent results on a variety of materials. Designed for use at low to moderate speeds, these burs are ideal for professional jewelers, engravers, and metalworkers who demand reliability and fine detail in their work.
How to Use
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Tool Compatibility: Fits standard rotary tools such as flex shafts, micromotors, and Dremel-style handpieces (3/32" shank).
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Operating Tips: Use with light, steady pressure to maintain control and minimize wear.
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Lubrication: For optimal performance and to extend tool life, apply a cutting lubricant like Busch® Lube-Stik during use.
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Ideal Applications:
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Creating flat-bottomed undercuts
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Cleaning up prong or bezel settings
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Carving and refining fine details
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Shaping tapered slots or seats in metal or wax
Safety Information
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Always wear protective eyewear while using rotary tools.
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Keep hair and loose clothing secured away from rotating equipment.
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After each use, clean the bur using a soft cloth and mild soap to maintain sharpness and prevent material buildup.
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Store burs in a clean, dry location to protect the cutting edges.
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Features
High-Quality Tungsten Vanadium Steel
Engineered for superior durability, heat resistance, and long-lasting cutting efficiency—ideal for frequent professional use.
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Inverted Cone Design
Optimized for precision seat cuts, undercutting, shaping prongs, and cleaning settings. Allows controlled removal of material, even in tight or angled spaces.
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Precision Machined Teeth
Uniform, single-cut fluting ensures consistent, chatter-free cutting action for smooth finishes on metals, wax, plastics, and other materials.
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ISO #031 Standard
Manufactured to meet strict ISO specifications, ensuring reliability, dimensional accuracy, and consistent quality for intricate detailing work.
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Standard 3/32” (2.38mm) Shank Size
Universal compatibility with most rotary handpieces, including flex shafts, micromotors, and Dremel-style tools—ideal for both bench jewelers and hobbyists.
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Optimal Bur Length (44.5mm / 1-3/4")
Provides comfortable handling and extended reach for working in hard-to-access areas or deep settings.
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Pack of 6 Burs
Convenient multi-pack supports efficient workflow, project continuity, and tool rotation to extend tool life.
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German Engineering & Manufacturing
Precision-crafted in Germany, known worldwide for exceptional metallurgical standards and tool-making excellence.
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Versatile Application
Ideal for jewelry making, stone setting, engraving, model making, watch repair, dental work, and fine metal sculpting.
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Clean, Controlled Finish
Designed to reduce burring and minimize surface damage, enhancing the quality and polish of finished pieces
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