Model:R20
Brand:TBJ
| model | R20 |
|---|
| d | 31.75 |
|---|---|
| D | 57.15 |
| B open | 9.525 |
| B dust cap | 12.7 |
| r min. | 0.8 |
| Cr | 13230 |
|---|---|
| Cor | 8300 |
| Approx | 0.125 |
|---|
















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