Harken 29 mm Zircon Double Block 2187 feed-sl-vicfreight Ball bearing double sheave exit

Ball bearing double sheave exit block with cover plate

yet durable

38mm adjustable waist belt with side release buckle

round hole installation

Shaft diameter: 1-3/4"

Harken 29 mm Zircon Double Block 2187 feed-sl-vicfreight Ball bearing double sheave exitThe 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