Harken 40mm Carbo Air Double Fixed Block

The Harken 40mm Carbo Air Double Fixed Block is a marine-grade pulley system engineered for precision load handling in rigging, hauling, and mechanical advantage applications. Built for professionals who demand reliability in high-stress environments, this double fixed block delivers consistent performance whether you're trimming sails, recovering vehicles, or managing heavy loads with minimal friction loss. Its compact footprint and lightweight construction make it ideal for installations where space is limited but strength cannot be compromised.

The Carbo Air design utilizes low-friction bearing technology that reduces energy waste during load transitions, a critical advantage when working with winches, pulley systems, or manual rigging setups. At just 0.15 lbs and measuring 3 x 1 x 5 inches, this block achieves an exceptional strength-to-weight ratio without sacrificing working load capacity. The dual fixed configuration provides redundancy and stability, ensuring loads remain secure even under dynamic conditions, while the durable Carbo material resists corrosion and maintains consistent performance across temperature extremes common in automotive recovery and motorsport applications.

Mechanics, recovery professionals, and automotive enthusiasts working with recovery winches, engine hoists, or custom rigging systems will appreciate the reliability and compact form factor of this double fixed block. Installation is straightforward—mount via the integrated anchor points to existing frame or structural components, then route your rope or cable through both sheaves for maximum mechanical advantage. The Harken pedigree ensures years of maintenance-free service, making this an essential addition to any serious workshop or recovery setup where load management and safety are non-negotiable.