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Nub Connectics: The Nub spherical block


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New for 2016, the revolutionary NUB. A small spherical friction block designed for use as a replacement, spare or emergency block capable of taking heavy loads.

Weighing just 16 grams, the NUB is capable of holding more than 4000kgs of static weight.

Standing rope diameter: 12mm max
Running rope diameter:10mm max.

Available in pairs.

Special features:

  • Small size
  • Lightweight design
  • Low friction

Technical specification:

  • Diameter: 37mm
  • Max Running line size: 10mm
  • Weight: 16g
  • SWL: 3000kgs
  • Break load: 4500kgs


Fully adaptable to all areas on the boat and can be used, but not limited, on runners, backstays, barber-haulers, inhauler and even shroud connections.

  • Model: The Nub
  • Manufactured by: Greemant-Courant

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