Allen 20mm Single Through Deck Block

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Allen 20mm Single Dynamic Through Deck Block. Our through deck blocks offer frictionless guidance for rope and wire control lines which are required to pass through a deck. Featuri ng a hard-wearing acetal body shaped perfectly to house the sheave, which results in a performance that you can rely on for adjustable rigging and other highly loaded applications. Available with one or two sheaves and in plain and ball-bearing systems to suit a wide variety of applications. Bearings‚ Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems which run on a plastic rail. Show more