Harken 16mm Hook-In Halyard Block 391

  • Sale
  • Regular price $57.50
  • Tax included.
  • In stock (1 units), ready to be shipped


The Harken 391 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.

Sheave Ø (mm) 16 mm
Sheave Ø (in) 5/8 in
Length (mm) 41 mm
Length (in) 1 5/8 in
Weight (g) 13 g
Weight (oz) .5 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 (lb) 400 lb
Breaking load (kg) 181 kg