Quick Overview
Low-friction Carbo AirBlocks from Harken are lightweight, strong, reliable and affordable. These compact double swivel with becket blocks have very high working loads for safe and easy trimming no matter how hard the wind blows. Available in 4 sizes.
Sideplates of high strength resin are UV stabilised to provide excellent protection against long term exposure to saltwater and sun. Carbo AirBlocks are 60% stronger and 30% lighter than our classic blocks making them perfect for the smaller diameter lines favoured by racers.
The compact 29mm Carbo is extremely strong. Use our miniature Carbo as a mainsheet block on small dinghies such as an optimist or for low-friction control line blocks on boats of any size. Use the 40mm Carbo for jiband mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.
Breaking Load (kg) 737
Safe Working Load (kg) 299
Max Line Diameter (mm) 8
Sheave Diameter (mm) 29
