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 highest on the market compared to similarly sized blocks.

Use for: 
Dinghy control lines
Spinnaker pole trip lines
Big Boat leech lines 
Outhauls
Downhauls 
Cunninghams
Traveler controls

Sheave 16 mm

Max.line 5 mm

Max working load 318 kg