RF40171 Ball Bearing 40mm Upright Lead BlockLead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision moulded Acetal sheaves running on Acetal or Torlon ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Sheave 40 mm Max. Rope 10 mm Max. Cable mm Fastener 5. 0 mm M. W. L. 350 kg B. L. 1000 kg Weight 60 g
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