Lead 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 stainless steel or Torlon® ball bearings provide high performance & low friction. Typically used for halyards at the mast base. Grade 316 stainless steel ball bearings. UV stabilised Acetal sheave. Grade 316 stainless steel load housing
