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Harken 16 mm
Air Block with O Ring


The 16 mm is Harken's® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies.

The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) safe working load - the highest on the market compared to similarly sized blocks.

The 442 uses a spacer and the 404 uses an O-ring to keep the line in the sheave during intermittent loading.

Use for:

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



  • Harken 16 mm Block
    #HAR404 List Price $14.75Only $12.98