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The Busch® Inverted Cone Single-Cut Burs, ISO #007, are meticulously engineered to meet the demanding standards of professional jewelers and metalworkers. Renowned for their precision, durability, and superior performance, these burs feature a unique inverted cone design that allows for accurate metal removal, precise seat cutting, and refined surface finishing.
Crafted from high-quality tungsten vanadium steel, Busch® burs offer exceptional strength and longevity. Each bur is individually machined to ensure a consistent, even cut, making them a reliable tool for intricate work. Recognized globally as a top-tier choice for precision tools, these burs are proudly manufactured in Germany, reflecting a commitment to quality and craftsmanship.
With a standard 3/32" (2.38 mm) diameter shank and an overall length of approximately 1-3/4" (44.5 mm), they are compatible with most rotary tools and flex shafts used in jewelry making. This package of six burs ensures you have an ample supply for both daily use and complex projects.
Ideal for creating flat-bottomed undercuts, tapered slots, and initiating seats in irregularly shaped bezels, the Busch® Inverted Cone Burs provide the control and precision essential for professional-level jewelry work.
Enhance your craftsmanship with the precision, consistency, and reliability that define the Busch® brand.
| Attribute |
Details |
| Brand |
Busch® |
| Material |
Tungsten Vanadium Steel |
| Shape |
Inverted Cone |
| Cut Type |
Single-Cut |
| ISO Standard |
#007 |
| Head Diameter |
0.70 mm |
| Head Length |
0.62 mm |
| Shank Size |
3/32" (2.38 mm) |
| Total Length |
1-3/4" (44.5 mm) |
| Cut Direction |
Right-hand (clockwise rotation) |
| Recommended Speed |
3,000–15,000 RPM (low to medium) |
| Compatibility |
Rotary tools, micromotors, flex shafts, Dremel®-type tools |
| Applications |
Jewelry making, fine metalwork, dental/lab use |
| Coolant Use |
Recommended (lubricant or wax-based) |
| Country of Origin |
Germany |
| Quantity |
1/2 Dozen (6 burs per pack) |
About this Item:
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Precision Engineered: Each Busch® bur is CNC-machined with uniformly spaced cutting teeth for smooth, controlled material removal.
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Superior Material: Made from high-quality tungsten vanadium steel, offering excellent wear resistance and long-lasting cutting performance.
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Inverted Cone Design: Ideal for creating undercuts, tapered slots, and seats in bezels, especially in tight or irregular areas.
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Smooth Cutting Action: Designed for low to moderate speed use, minimizing heat buildup while delivering clean, burr-free cuts.
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Trusted by Professionals: Manufactured in Germany to the highest standards for use in jewelry fabrication, watchmaking, engraving, and precision metalwork.
How to Use:
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Insert the bur into the collet or chuck of a compatible rotary tool (e.g., flex shaft, micromotor, or Dremel®).
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Secure tightly to avoid vibration or slippage.
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Operate at a controlled speed (3,000–15,000 RPM) depending on the material.
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Apply light, even pressure—let the bur do the cutting.
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Use a lubricant or bur lube (e.g., Busch Lube-Stik) to:
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Reduce friction
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Prevent heat damage
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Extend tool life
Safety Information:
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