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A tough composite bearing sheave resists corrosion for a long service life
Description: PostLite
finished with our unique
Mainsheet and self-tacking jib travellers on dinghies and catamarans
Power directing ferrite choke bead
Harken 45mm Aluminum Loop Block Boat RS Quest A tough composite bearing sheaveBlack 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. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. The sheave center carries primary load, allowing a smaller, lighter weight block. The soft attachment Loop block has a