Ronstan Series 55 Double Swivel Shackle Head Orbit BB Block, Becket

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  • Regular price $89.24
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The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

  • Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)Halyard, Vang and Backstay application on boats to 8m (26ft)Control line applications on larger yachts

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