Round
Sizing
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| US No | 801 | 801 | 801 | 801 | 801 | 801 | 801 | 801 | 801 | 801 | 801 | 801 |
| Diameter | 006 | 008 | 010 | 010 | 012 | 014 | 016 | 018 | 021 | 023 | 025 | 028 |
| International Ref | BR-49 | BR-45 | BR-46 | BR-41 | BR-40 | BR-31 | ||||||
| Head Length (MM) | 0.6 | 0.8 | 1 | 1 | 1.2 | 1.4 | 1.6 | 1.8 | 2.1 | 2.3 | 2.5 | 2.8 |
| overall Length (MM) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| coarse | • | • | • | • | • | • | • | • | ||||
| medium | • | • | • | • | • | • | • | • | • | |||
| fine | • | • | • | • | • | |||||||
| extra fine | • | • | • |