Spearhead High Speed Steel (HSS) 45-degree bearing burs are hand cut by expert craftsmen in the USA, delivering superior sharpness and longer service life compared to machine-cut Tungsten Vanadium Carbon Steel burs. Each bur in the Spearhead line is easily identified by the size stamped directly on the 3/32" shank — a hallmark of quality that professional jewelers rely on. These 45-degree setting burs are the preferred choice of quality jewelers everywhere who demand consistent, precise seat cutting.
This kit contains 14 individual HSS 45-degree bearing burs, ranging from No. 2 (1.10 mm) through No. 28 (7.2 mm), with one bur per size. The assortment covers the most commonly needed sizes for stone setting work, making it an ideal starter set or shop reference kit.
| Material | High Speed Steel (HSS) |
|---|---|
| Bur Type | 45-Degree Bearing / Setting Bur |
| Shank Size | 3/32" |
| Cut Type | Hand cut |
| Origin | USA |
| Kit Quantity | 14 pieces |
| Size Range | 1.1 mm – 7.2 mm |
This kit includes one each of the following 14 Spearhead HSS 45-degree bearing burs:
| Part # | Size |
|---|---|
| 119.382 | 1.1 mm |
| 119.383 | 1.3 mm |
| 119.384 | 1.5 mm |
| 119.385 | 1.7 mm |
| 119.386 | 1.9 mm |
| 119.388 | 2.3 mm |
| 119.390 | 2.7 mm |
| 119.392 | 3.1 mm |
| 119.394 | 3.5 mm |
| 119.396 | 4.0 mm |
| 119.398 | 4.5 mm |
| 119.400 | 5.0 mm |
| 119.404 | 5.6 mm |
| 119.408 | 7.2 mm |
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