Harken 57 mm Fiddle Block — Swivel lines It works on virtually all

It works on virtually all materials

Optimum Time Race Watch is the sailing timer that has set the benchmark

The ball bearings provide for good sheave rotation with the lowest possible friction

100% cotton

Harken 57 mm Fiddle Block — Swivel lines It works on virtually allLow friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave (mm)57 mm Length (mm)153 mm Weight (g)105 g Shackle pin (mm)5 mm Maximum line (mm)10 mm Maximum working load (kg)359 kg Breaking load (kg)1080 kg