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Carbo Air blocks are made of tough reinforced composite in a size and style to fit any system.
These smooth-running powerful performers make trimming easy, no matter how hard the wind blows. Carbo Air blocks are made of tough reinforced composite in a size and style to fit any system: singles, doubles, triples, quads, and quints; ratchets and fiddles; soft and hard attach. Perfect for main, jib and spinnaker sheets on dinghies and sportboats; control lines on boats of all sizes. Lightweight, strong and reliable fiber-reinforced composite construction. Features ball bearings, sheave, and UV-stabilize side plates.