Harken 16mm Hook-In Halyard Block 391 Ronstan FRICTION RINGS Manufactured by the same manufacturer

Manufactured by the same manufacturer as the genuine OEM

double and maxi grip handles

The best way to inflate a fender is pushing air pressure from a compressor with a flat head against the valve and the fender will inflate

Made with a combination of high stretch neoprene and 3D air-mesh the upper is highly supportive

lowering your application costs

Harken 16mm Hook-In Halyard Block 391 Ronstan FRICTION RINGS Manufactured by the same manufacturerThe Harken 391 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) 16 mm Sheave (in) 5 8 in Length (mm) 41 mm Length (in) 1 5 8 in Weight (g) 13 g Weight (oz) . 5 oz Maximum line (mm) 5 mm Maximum line (in) 7 32 in Maximum working load (kg) 113 kg Maximum