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Thumbnail Filmstrip of Series 19 Underhung Loft Blocks - 8", 8 Line Images
Description
8", 8 line, Underhung style, supported by a single structural beamASTM Class 30 grey iron sheave with 1/4" machined grooves
17mm sealed precision ball bearings
10 gauge side plates
3/4" drawbolt and steel clip allow a 4" grip adjustment to accomodate a range of beam sizes
A minimum of three spacers between the side plates; two prevent cables from escaping the sheave grooves