Fly Block - Titanium Sheave

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Harken 29mm and 40mm soft-attach Fly blocks have a titanium sheave with stainless steel ball bearings and inner race on a composite fibre-reinforced body. We use the blocks for spi nnaker halyards, boom vang cascades and other high load applications where a metal sheave is important to prevent a line from burning or breaking a plastic sheave. Fly blocks need to be lashed on. See more information on the Harken website. Show more