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The Harken 437 is a 16mm Flip Flop Block which is in Harken’s smallest pulley block range.

It is perfect for small synthetic control lines found on high-tech dinghies.
The bearing system uses stainless steel balls in a captive grooved race and has a 113 kg (250 lb) maximum working load—the highest on the market compared to similarly sized blocks.

Use for:

  • Dinghy control lines
  • Spinnaker pole trip lines
  • Big Boat leech lines
  • Outhauls
  • Downhauls
  • Cunninghams
  • Traveler controls
  • Halyards on prams

Dimensions:

    • Sheave Ø 16 mm
    • Length 34 mm
    • Weight 21 g
    • Fasteners 4mm RH
    • Maximum  line Ø 5 mm
    • Maximum  working load 113 kg
    • Breaking load 544 kg
    Shipping
     This Item Ships to 

    The Harken 437 is a 16mm Flip Flop Block which is in Harken’s smallest pulley block range.

    It is perfect for small synthetic control lines found on high-tech dinghies.
    The bearing system uses stainless steel balls in a captive grooved race and has a 113 kg (250 lb) maximum working load—the highest on the market compared to similarly sized blocks.

    Use for:

    • Dinghy control lines
    • Spinnaker pole trip lines
    • Big Boat leech lines
    • Outhauls
    • Downhauls
    • Cunninghams
    • Traveler controls
    • Halyards on prams

    Dimensions:

      • Sheave Ø 16 mm
      • Length 34 mm
      • Weight 21 g
      • Fasteners 4mm RH
      • Maximum  line Ø 5 mm
      • Maximum  working load 113 kg
      • Breaking load 544 kg
      Shipping
       This Item Ships to 

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