Harken 40mm Single Zircon Block with Becket clamcleat Signature embossing on the elbows

Signature embossing on the elbows

Carbo AirBlocks are 60% stronger and 30% lighter than our classic blocks making them perfect for the smaller diameter lines favoured by racers

and discoloration from rust and corrosion

Break Load (kg): 2200

Sheave Diameter: 28mm

Harken 40mm Single Zircon Block with Becket clamcleat Signature embossing on the elbowsThe newest Zircon offerings are six models with 29 mm sheave diameters. These expand the Zircon offering from eight models to eighteen. Zircon is not an all purpose alternativeno block is. But these smaller sizes make Zircon appropriate for control lines where multi part purchases are required. Zircon reacts immediately. So, when the pressure gets light and you ease that 24: 1 Cunningham rigged under the deck or want to let the jib lead forward for