The Harken 40mm Carbo AirBlock is a lightweight, high-strength sailing block designed for smooth, low-friction line handling. Built with reinforced composite side plates and ball bearing sheaves, it delivers efficient trimming performance while keeping weight to a minimum. Designed for demanding control line and sheet applications, the compact construction offers an excellent strength-to-weight ratio. The swiveling head can be locked in multiple positions for rigging versatility across a range of sailing setups.

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