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. The 404 uses an O-ring to keep the line in the sheave during intermittent loading.
Breaking strength (kg): 544
Length (mm): 29
Max. line dia. (mm): 5
Sheave dia. (mm): 16
SWL (kg): 113
Weight (g): 10