S20 BB Block,Upright Lead

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  • Regular price $20.99
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The Ronstan 20 mm Series 20 Upright Lead Block (RF20171) has self-lubricating Acetal polymer sheaves running on polished stainless steel races that perform equally well with dynamic loads and high static loads.

Features:

  • Low friction
  • High static and dynamic load capacity
  • Lightweight
  • Stainless steel ball bearings
  • UV stabilished Acetal sheave
  • Grade 316 stainless steel load housing
  • Impact and UV resistant, stainless steel cheeks
  • Typically used for halyards at the mast base

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