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Ronstan RF20171 20mm Upright Lead Block

Product Code: 101004
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Price: £18.10
Qty: Stock Available in 3-5 Days
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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 Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.


  • Typically used for halyards at the mast base


  • Acetal ball bearings
  • UV stabilised Acetal sheave
  • Grade 316 stainless steel load strap and head fitting


  • Sheave Diameter - 20mm
  • Maximum Rope Diameter - 6mm
  • Fastening diameter - 4mm
  • Maximum working load - 250kg
  • Breaking load 550kg
  • Weight 18g
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