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) maximum working load. The 404 uses an O-ring to keep the line in the sheave during intermittent loading.

Specification:

Sheave Diameter: 16mm

Length: 29mm

Weight: 10g

Max Line Diameter: 5mm

Max Working Load: 113kg

Breaking Load: 544kg