Harken 40mm Carbo Air Double Swivel Block

The Harken 40mm Carbo Air Double Swivel Block is designed for sailors and boaters who require reliable rigging performance under load. This lightweight block is ideal for halyards, sheets, and mainline applications where smooth operation and minimal weight are critical. Whether racing or cruising, this block enhances efficiency and safety on the water.

Constructed from Harken's proprietary Carbo Air composite material, this block weighs just 0.3 lbs, making it perfect for applications where every ounce counts. The double swivel design allows for 360-degree rotation on both the head and load-bearing sheave, effectively reducing torque and wear on lines. Harken's advanced bearing system ensures smooth, low-friction performance, even in harsh saltwater conditions.

This block is suitable for both cruising and racing sailors, particularly those utilizing modern rigging systems. Its compact dimensions of 3 x 1 x 5 inches allow for easy integration into existing deck layouts without significant modifications. Installation is straightforward, requiring only a secure attachment to compatible mast, boom, or deck hardware.