Clean & comfortable

Low friction axle

Wide waist belt with hook-and-loop adjustment for added comfort and secure fit

The drogue attaches to horse shoe float or dan buoy to reduce wind drift

Machined in hard anodised alloy

Harken 16mm Flip-flop Block 437 SEALANTS Clean & comfortableThe 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) 34 mm Length (in) 1 5 16 in Weight (g) 21 g Weight (oz) . 75 oz Maximum line (mm) 5 mm Maximum line (in) 7 32 in Fasteners (mm) 4 RH mm Fasteners (in) #8 RH in