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 )-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
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