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Ronstan Series 20 Micro Lead Block

Cat.No:  4840 Sup. No:  RF20171

Availability: In stock

RRP: $19.04

our price $16.95
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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.


  • Sheave: 20 mm
  • Max. Rope: 6 mm
  • Max. Cable: - mm
  • Fastener: 4.0 mm
  • M.W.L.  250 kg
  • B. L.  550 kg
  • Weight: 18 g


  • Typically used for halyards at the mast base.



  • Grade 316 stainless steel ball bearings
  • UV stabilised Acetal sheave
  • Grade 316 stainless steel load housing

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