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57mm and 75mm sizes
Harken 51mm High-Strength Cheek Block with high-load composite bearings to carry axial loads
The sheave can be relocated to allow the control line to feed from below
Good for jib and mainsheet systems on high-performance dinghies
mount a switchable ratchet in the cockpit and a boom-mounted Ratchamatic® directly above to allow double holding power in heavy air and to ensure the mainsheet runs freely in light air
HARKEN 75 mm Carbo Fiddle Block - Swivel, 2690 Tracks & Accessories_Track accessories 57mm and 75mm sizes75mm Carbo Fiddle Block features high load ball bearings with fitted races for low friction operation. Dual Delrin sheave diameters prevent line chafe and form a neat, low friction tackle in a single plane. Three way head system. Cheek material finish constructed from long glass reinforced engineered nylon. Low friction Carbo Air blocks are lightweight, strong, reliable, and affordable. Companions to our popular Harken Big Boat blocks, these small,
