Busch® Burs, Fast Cut Cup, Fig. 411C
These very popular cup burs feature a unique blade design that allows for faster cutting, assuring longer life for the bur and more production for the jeweler. Head is slimmer than other cup burs — ideal when prongs are close together. 3/32″ shank. Made in Germany.
Sold in multiples of 6.
Available in 8 sizes: 1.00mm, 1.20mm, 1.40mm, 1.50mm, 1.60mm, 1.80mm, 2.10mm, and 2.30mm.
Bur Dimensions
Busch Bur sizes correspond to the OD of the bur head. Shank diameter is 2.38mm (3/32″). Overall length is 44.5mm (1-3/4″). The overall length may vary slightly due to extra length in the head or neck.
All dimensions are in millimeters.
| OD | ID | L | Busch# |
|---|---|---|---|
| 1.00 | 0.75 | 0.71 | 010 |
| 1.20 | 0.95 | 0.86 | 012 |
| 1.40 | 1.15 | 1.03 | 014 |
| 1.50 | 1.25 | 1.11 | 015 |
| 1.60 | 1.30 | 1.19 | 016 |
| 1.80 | 1.45 | 1.35 | 018 |
| 2.10 | 1.70 | 1.62 | 021 |
| 2.30 | 1.90 | 1.78 | 023 |
