| Total qty | Discount | Per unit | You save |
|---|---|---|---|
| 1 | — | — | |
| 2 – 3 | 5% off | ||
| 4 – 11 | 7% off | ||
| 12 + | 10% off |
The Busch Fig 414AU Carbide 90° Hart Bur Kit delivers a complete range of 15 sizes in a single convenient plastic box, purpose-built for cutting seats in prongs. Spanning 0.90mm to 2.30mm in 0.10mm increments, this kit gives bench jewelers and stone setters a comprehensive selection to handle a wide variety of prong work.
Carbide construction makes these the longest-lasting burs in the Busch lineup, outlasting both tungsten vanadium and high-speed steel burs. Their advanced blade geometry — typically reserved for steel tooling — is engineered to power through the toughest metals, including platinum, titanium, and steel, while also delivering exceptional service life on standard gold alloys. The result is a lower cost-per-use compared to conventional burs.
All shanks measure 3/32" for broad compatibility with standard flex-shaft handpieces and rotary tools. Also available individually by the piece. Related sets include the Fig 446AU 70° Hart Bur kit (BAU118.600) and the Fig 413AU Traditional Setting Bur kit (BAU118.835).
| Figure | 414AU |
|---|---|
| Bur Type | Hart Bur, 90° |
| Material | Carbide |
| Shank Size | 3/32" |
| Size Range | 0.90mm – 2.30mm |
| Kit Quantity | 15 burs |
| Recommended Speed | 2,000 – 10,000 RPM |
| Origin | Germany |
| Packaging | Plastic storage box |
Individual burs from this kit are also available for purchase by the piece. Related carbide bur kits include the Fig 446AU 70° Hart Bur set (BAU118.600) and the Fig 413AU Traditional Setting Bur set (BAU118.835).
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