| 10B1 British standard pilot bore sprocket |

| Attribute | Value |
|---|---|
| Boss Dia | 85 |
| Outside Dia | 139 |
| Teeth | 26 |
| Pitch | 5/8 |
| Overall Length | 35 |
| Pilot Bore Size | 20 |
Disclaimer: Should a manufacturer of a given part not be available then a direct equivalent from an alternative manufacturer will be supplied.