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Series 20 Block, Single Shackle Head, 550lb. SWL, 0.7oz.

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Manufacturer: Ronstan
Manufacturer Part No: RF20100


  • Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction.
  • Low friction
  • High static and dynamic load capacity
  • Lightweight


  • Stainless steel ball bearings
  • UV stabilised Acetal sheave
  • Grade 316 stainless steel load strap and head fitting
  • Impact and UV resistant, fibre reinforced Nylon cheeks


  • Dinghy control lines
  • Dinghy vangs
  • Cunninghams
  • Traveller controls


Sheave Ø 3/4 in.

Max. Rope Ø 1/4 in.

Max. Cable Ø - in

Pin Ø 1/8 in.

M.W.L. 550 lb.

B. L. 1210 lb.

Weight 0.7 oz.

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