Harken 29 mm Zircon Block Small Blocks which switches seamlessly from free-running

which switches seamlessly from free-running to ratchet mode

The Switch One Design is a next-generation

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Wing hinge pin (6mm dia)

Harken 29 mm Zircon Block Small Blocks which switches seamlessly from free-runningPart No. 2185 The 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