HARKEN 57mm CARBO 10:1 SYSTEM

This system offers 10:1 purchase power! Light weight, low profile and very strong, these Carbo AirBlocks® have enormous working range, with a higher working load than standard blocks, even though they are lighter in weight. The base block has an on-off ratchet and will roll freely in both directions when disengaged, such as in light air. Engage the ratchet in heavy air when you need the mechanical advantage of the ratchet. The 57mm ratchet sheave offers 10:1 holding power, making it easier to handhold in heavy air.

Safe working load is 1800 pounds; breaking strength is 4500 pounds. Includes Harken 10:1 base and boom blocks; order mainsheet line separately.