The 16 mm 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.

Sheave (mm)16mmLength (mm)38mmWeight (g)12gMaximum line (mm)5mmMaximum working load (kg)113kgBreaking load (kg)544kg