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 intermitte...more



















