Precision cup burs designed for rounding and finishing prongs during stone setting. The twincut blade geometry cuts cleanly and clears shavings efficiently, giving you controlled shaping with a smooth, consistent result.
Features
- Fig. 411CT concave cone cup bur with twincut blade geometry
- Designed for finishing and rounding prong tips during stone setting
- Twincut design allows efficient removal of metal shavings
- Manufactured from tungsten vanadium steel
- Made to ultra-high precision tolerances
- Sold in multiples of 6 per size
Specifications
| Bur Type |
Cup Bur – Fig. 411CT (Concave Cone) |
| Blade Geometry |
Twincut |
| Material |
Tungsten Vanadium Steel |
| Shank Size |
3/32" (2.35 mm) |
| Size Range |
0.80–2.30 mm |
| Pack Quantity |
6 per size |
| Brand |
Busch |
Available Options
| Part # |
Diameter (mm) |
Diameter (in) |
| B118.411008 |
0.80 mm |
0.0315" |
| B118.411009 |
0.90 mm |
0.0354" |
| B118.411010 |
1.00 mm |
0.0394" |
| B118.411011 |
1.10 mm |
0.0433" |
| B118.411012 |
1.20 mm |
0.0472" |
| B118.411013 |
1.30 mm |
0.0512" |
| B118.411014 |
1.40 mm |
0.0551" |
| B118.411015 |
1.50 mm |
0.0591" |
| B118.411016 |
1.60 mm |
0.0630" |
| B118.411017 |
1.70 mm |
0.0669" |
| B118.411018 |
1.80 mm |
0.0709" |
| B118.411019 |
1.90 mm |
0.0748" |
| B118.411020 |
2.00 mm |
0.0787" |
| B118.411021 |
2.10 mm |
0.0827" |
| B118.411022 |
2.20 mm |
0.0866" |
| B118.411023 |
2.30 mm |
0.0906" |
Notes
- Primary use: rounding and finishing prongs during stone setting.
- Also available in Fig. 411T with traditional concave geometry for a more rounded prong profile.
- Sold in multiples of 6 per size.