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Harken Block 12:1 Mainsheet Carbo Boom

$205.55 each

SKU: 56-9966 Categories: , ,

Product Description

Harken #HSB379 is a 57mm triple fiddle block with swivel used for 12:1 mainsheet systems on beach cats.

Low-friction Carbo AirBlocks® are lightweight, strong, reliable and affordable. These small, compact blocks have very high working loads for safe, easy trimming.


  • Sheave Diameter: 2-1/4"
  • Length: 6"
  • Maximum Line Diameter: 7/16"
  • Maximum Working Load: 2380 lb.
  • Breaking Strength: 5000 lb.
  • Weight: 11.15 oz.

Special order item.

Additional information

Weight 0.72 lbs

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