Harken 16 mm Air Block with O Ring Sheave Box Combine with a long john

Combine with a long john in boats where maneuverability is key

Whilst primarily design for sailing

Low friction derlin for racing mast

3 piece adjustable break apart - Minimum height 66" (168cm) - Maximum Height 86

Harken 16 mm Air Block with O Ring Sheave Box Combine with a long johnThe 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