| 12B2 British standard roller chain sprocket |

| Attribute | Value |
|---|---|
| Overall Length | 45 |
| Boss Dia | 37 |
| Outside Dia | 62 |
| Pilot Bore Size | 12 |
| Number of Teeth | 9 |
| Pitch | 3/4 |
Disclaimer: Should a manufacturer of a given part not be available then a direct equivalent from an alternative manufacturer will be supplied.