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Harken 29mm Carbo Double Swivel Block

Cat.No:  8632 Sup. No:  HK342

Availability: In stock

RRP: $82.95

our price $72.95
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The 29 mm Carbo block is compact block and is extremely strong. Use a miniature Carbo as a mainsheet block on small dinghies such as the Optimist, or for low-friction control blocks on any size boat.

Doubles and triples feature U-Locks to hold the swivel in front/side position, or to let it spin freely.
The triple’s compact cam arm supports high-load purchases of 5:1 or 6:1.

The line-shedding cheek block features a small mounting footprint and drainholes. The low-profile Ti-Lite replaces headpost, shackle, and spring with high-tech line.

Used for

  • Outhauls
  • Cunninghams
  • Vangs
  • Traveller controls
  • Barberhaulers
  • Flag halyards


  • Sheave: 29mm
  • Length: 73mm
  • Weight with shackle: 51g
  • Shackle pin: 5mm
  • Max line: 8mm
  • Safe working load: 299kg
  • Breaking strength: 737kg



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