| Total qty | Discount | Per unit | You save |
|---|---|---|---|
| 1 | — | — | |
| 2 – 3 | 5% off | ||
| 4 – 11 | 7% off | ||
| 12 + | 10% off |
Busch Fig 414AU Carbide 90° Hart Burs are precision-ground setting burs designed for cutting seats in prongs. Sold individually, these 90-degree hart burs are an ideal choice for jewelers who demand exceptional longevity and cutting performance from their burs. Carbide construction outlasts both tungsten vanadium and high-speed steel burs, making them the longest-lasting burs available for demanding bench work.
Busch carbide burs excel on the toughest metals — including platinum, titanium, and steel — while also delivering extremely long service life on standard gold alloys. The result is a lower cost per use compared to conventional burs. Manufactured in Germany using state-of-the-art techniques, these burs feature a powerful blade geometry typically found only on steel tooling. All shanks are 3/32". Available in 15 sizes from 0.90 mm to 2.30 mm.
Related Busch carbide hart burs: Fig 446AU 70° Hart Bur (BAU118.509) and Fig 413AU Traditional Setting Bur (BAU118.808AU).
| Bur Type | Hart Bur, 90° |
|---|---|
| Figure | Fig 414AU |
| Material | Carbide |
| Shank Size | 3/32" |
| Size Range | 0.90 mm – 2.30 mm |
| Recommended Speed | 2,000 – 10,000 RPM |
| Country of Origin | Germany |
| Sold As | Individually (by the piece) |
| Part # | Bur Size |
|---|---|
| BAU118.509 | 0.90 mm |
| BAU118.510 | 1.00 mm |
| BAU118.511 | 1.10 mm |
| BAU118.512 | 1.20 mm |
| BAU118.513 | 1.30 mm |
| BAU118.514 | 1.40 mm |
| BAU118.515 | 1.50 mm |
| BAU118.516 | 1.60 mm |
| BAU118.517 | 1.70 mm |
| BAU118.518 | 1.80 mm |
| BAU118.519 | 1.90 mm |
| BAU118.520 | 2.00 mm |
| BAU118.521 | 2.10 mm |
| BAU118.522 | 2.20 mm |
| BAU118.523 | 2.30 mm |
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