Harken 16 mm Air Block with O Ring Sheave Box Very popular with Optimists and

Very popular with Optimists and Toppers the Little Hawk MK1 is also ideal for any dinghy that wants accurate wind direction information with minimal weight and drag

Hole Centres: 57mm

A very forgiving shape

Low friction derlin for racing mast

Harken 16 mm Air Block with O Ring Sheave Box Very popular with Optimists andThe 16mm is Harkens 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) maximum working load. The 404 uses an O ring to keep the line in the sheave during intermittent loading. Specifications Sheave : 16mm Length: 29mm Weight: 10g Maximum line : 5mm Maximum working load: 113kg Breaking load: 544kg