<http://schema.org/description>
"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. The HSB294 is a single 16mm AirBlock with a clevis pin axle."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.apsltd.com/16mm-single-w-clevis-pin-axle.html>