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Spi 4 Nub pulley with tie strap for easy spi tack attachment on bowsprits.
- For bowsprit, fixing and adjustment of the strap by lashing in dyneema, tightening by 4 half keys minimum
- Throat pulley for ropes up to 12 mm in pure Dyneema® or with non-aggressive sheath
- Tack position can be adjusted by means of the Nodus FR14 friction ring