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"Harken's smallest block, the 16mm 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.The safe working load of 250lbs is the highest on the market for similarly sized blocks. Great for applications like dinghy control lines, big boat leech lines, downhauls, traveler controls, spinnaker pole trip lines, outhauls, cunninghams and halyards on prams."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.apsltd.com/16mm-triple.html>