57 mm Double Carbo Block - Swivel

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.
• 60% stronger and 30% lighter
• Fiber-reinforced composite construction
• Attachment applications and uses are limitless
• Ball bearings, sheave, and sideplates are UV-stabilized