Ronstan RF15171 Upright lead block

$17.95 $15.26
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Ronstan RF15171 Upright lead block


  • Smallest and lightest ball bearing block available
  • Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction
  • Single loop head blocks include an O-ring to separate running line from head lashing or fixing
Sheave Ø 15 mm
Max. Rope Ø 5 mm
Max. Cable Ø mm
Pin Ø mm
M.W.L. 120 kg
B. L. 550 kg
Weight 9 g


  • Dinghy control lines
  • Vangs, cunninghams and tweakers
  • Shock cord tensioning systems


  • BB sheaves: UV stabilised acetal
  • Ball bearings: Stainless steel
  • Cheeks: Grade 316 stainless steel