Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use less line than traditional gross-trim/fine-tune systems.
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Specifications
| Recommended line - Max Ø (mm) | 10 |
| Recommended line - Min Ø (mm) | 8 |
| Power ratio 1 (X : 1) | 4 |
| Power ratio 2 (X : 1) | 8 |
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