or make 4 interest-free payments of
Calculated at checkout
Low-friction Carbo AirBlocks® are lightweight, strong, reliable—and economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The sideplates are UV-stabilized, high-strength resin and designed for small-diameter lines favored by racers. Good for jib and mainsheet systems on dinghies and sportboats, and for high-load control lines on boats of all sizes.
Recipient of both the Dame Award andSail Magazine’s Freeman-Pittman Award for innovation, this innovative line of blocks turns fiber-reinforced composite construction into a reliable strength-to-weight ratio you can depend on. Companions to the popular Harken Black Magic block line, these small, compact blocks work well with very high working loads for easy trimming.
Sheave Ø (mm)
Maximum Line Ø (mm)
Maximum Working Load (kg)
Breaking Load (kg)
Do not use Harken equipment for human suspension unless product is specifically certified and labeled for such use.
High strength-to-weight ratio block
Harken’s most innovative blocks
30% lighter, 60% stronger than equivalent conventional blocks
Smaller block for jib and mainsheet systems on high-performance dinghies
Use for high-load control lines on small keelboats
Recipient of both the Dame Award andSail Magazine’s Freeman-Pittman Award for innovation