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With 180 degree wrap
Stainless steel side plates add strength
and for lightly loaded control lines on boats of all sizes
Commonly 57mm carbo ratchet blocks are for jibsheets and spinnakers on medium dinghies
Conventional and high-tech lines run smoothly over the UV-resistant acetal sheave
HARKEN 75mm Aluminum Double Stand-Up Block, HBB254 Tiller Steering_Extensions With 180 degree wrapBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. Black Magic blocks are easy to clean and service. They have few parts and no loose balls or rollers to misplace. Unlike blocks that are riveted, fasteners allow quick disassembly with a single hex wrench. Note:
