Harken 29mm Carbo Blocks

The compact 29 mm Carbo block is extremely strong. Use Harken's 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.

Use for:

  • Outhauls
  • Cunninghams
  • Vangs
  • Traveler controls
  • Barberhaulers
  • Flag halyards
Harken 29mm Single Swivel Carbo Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Single Swivel Carbo Block w/Becket
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Double Swivel Carbo Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Double Swivel Carbo Block w/Becket
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Triple Swivel Carbo Swivel Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Triple Swivel Carbo  Block w/Becket
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Triple Carbo Block w/Cam Cleat
High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and..
Harken 29mm Triple Carbo Block w/Cam Cleat & Becket
High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and..
Harken 29mm Single Fixed Carbo Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm 90 degree Fixed Head Carbo Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Carbo Cheek Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Carbo Double Fixed Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Carbo Pivoting Lead Block w/ Aluminum Cam
High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and..
Harken 29mm Carbo Pivoting Lead Block w/ Carbo Cam
High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and..
Harken 29mm Carbo Traveler Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
Harken 29mm Single Fixed Standup Carbo Block
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the ..
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