| Total qty | Discount | Per unit | You save |
|---|---|---|---|
| 1 | – | – | |
| 2 – 3 | 5% off | ||
| 4 – 11 | 7% off | ||
| 12 + | 10% off |
Pack Size Options
A 90 degree hart bur cuts and refines angular seats and details, and at the bench it feels crisp and controlled where a clean edge matters. Busch Fig. 156C hart burs are made from tungsten vanadium steel to ultra-high precision tolerances, a reliable choice for stone setting, seat preparation, and fine detail work across a broad range of sizes.
| Part # | Bur Size (mm) | Bur Size (in.) |
|---|---|---|
| B118.498 | 0.70 mm | 0.028 in. |
| B118.499 | 0.80 mm | 0.031 in. |
| B118.500 | 0.90 mm | 0.035 in. |
| B118.501 | 1.00 mm | 0.039 in. |
| B118.502 | 1.20 mm | 0.047 in. |
| B118.503 | 1.40 mm | 0.055 in. |
| B118.504 | 1.50 mm | 0.059 in. |
| B118.505 | 1.60 mm | 0.063 in. |
| B118.506 | 1.80 mm | 0.071 in. |
| B118.506.5 | 1.90 mm | 0.075 in. |
| B118.507 | 2.10 mm | 0.083 in. |
| B118.508 | 2.30 mm | 0.091 in. |
| B118.509 | 2.50 mm | 0.098 in. |
| B118.510 | 2.70 mm | 0.106 in. |
| B118.511 | 2.90 mm | 0.114 in. |
| B118.512 | 3.10 mm | 0.122 in. |
| B118.513 | 3.30 mm | 0.130 in. |
| B118.514 | 3.50 mm | 0.138 in. |
| B118.515 | 3.70 mm | 0.146 in. |
| B118.521 | 0.95 mm | 0.037 in. |
| B118.522 | 1.10 mm | 0.043 in. |
| B118.523 | 1.30 mm | 0.051 in. |
| B118.524 | 1.42 mm | 0.056 in. |
| B118.525 | 1.58 mm | 0.062 in. |
| B118.526 | 1.70 mm | 0.067 in. |
| B118.527 | 2.00 mm | 0.079 in. |
| B118.528 | 2.20 mm | 0.087 in. |
| B118.529 | 2.40 mm | 0.094 in. |
| B118.530 | 2.60 mm | 0.102 in. |
| B118.531 | 2.80 mm | 0.110 in. |
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