Harken Carbo AirBlocks two-disc block/vortex

Harken Carbo AirBlocks twin disk block/vortex, low friction Carbo AirBlocks® are light, strong and reliable. Harken Carbo AirBlocks dual disk block/vortex are small, compact blocks with very high working speed and load capacity for safe, easy trimming no matter how hard the wind blows. The ball bearings, disc and cheeks of the Harken Carbo AirBlocks twin disc block/vortex are UV stabilized and offer long-term protection against salt water and sun.