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Harken 57mm Carbo Single Swivel Block

Cat.No:  8598 Sup. No:  HK2600

Availability: In stock

RRP: $80.35

our price $74.95
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Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's classic blocks.

The nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Ball bearings, sheave and sideplates UV stabilized with black additive for maximum protection.

Blocks feature Cam-Lock or U-Lock locking systems to lock the shackle in front or side positions, or swivel to keep line from twisting.

Used for

  • Main/jib sheets
  • Mainsheet fine-tune
  • Control lines
  • Vangs
  • Cunninghams
  • Outhauls


  • Sheave: 57mm
  • Length: 110mm
  • Weight with shackle: 87g
  • Shackle pin: 5mm
  • Max line: 10mm
  • Safe working load: 360kg
  • Breaking strength: 1080kg



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