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.
Sheave Ø (mm)16 mm Sheave Ø (in)5/8 in Length (mm)29 mm Length (in)1 1/8 in Weight (g)10 g Weight (oz).33 oz Maximum line Ø (mm)5 mm Maximum line Ø (in)7/32 in Maximum working load (kg)113 kg Maximum working load (lb)250 lb Breaking load (kg)544 kg Breaking load (lb)1200 lb