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The internal elements are made of spiral copper wires inserted into brass tubes which ensures long-range communication and best radio performance
Fly blocks are perfect for use on foiling dinghies and sportboats and for vang cascades and backstay systems on Grand-Prix racers
Sheave Ø of 57mm or 2 1/4 inches
L1 + L5 GNSS receiver on the water
68% at 20% of breaking strength
Harken 57mm Triple Fiddle Block Swivel, Reinforced Cam Arms Boat J/88 The internal elements are madeLightweight, durable, and reasonably priced, the Low friction Carbo Air blocks are a valuable addition to our renowned Harken Big Boat blocks. With impressive working loads, these compact 57mm Triple Fiddle Blocks feature a Swivel design and Reinforced Cam Arms for safe and effortless trimming. Part No. HSB378, they have a Sheave of 57 mm (2 1 4 in), can accommodate a Maximum line of 10 mm (7 16 in), and have a Maximum working load of 1080 kg (2380
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