Harken Carbo Air Blocks - 57mm J2 Cruising speed is the boat’s

Cruising speed is the boat’s normal

Hose Size: 28mm (1-1/8") & 31mm  (1-1/4")

Black Streak Remover begins working on contact to eliminate black streaks under rubrails or anywhere else on the boat

Repairs chips

Ideal for lobster and crab pot marking

Harken Carbo Air Blocks - 57mm J2 Cruising speed is the boat’sLow 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 Diameter: 57mm Tough, fibre reinforced composite construction Open 'Air' profiling cuts out unnecessary weight Delrin acetal resin UV stabilised ball bearings Free running ball bearings on curved races for low friction efficiency