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Ronstan Series 25 Utility Block - Single - Swivel Shackle Head [RF573]

Ronstan Series 25 Utility Block - Single - Swivel Shackle Head [RF573]

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Regular price $15.95 USD
Regular price $23.14 USD Sale price $15.95 USD
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Series 25 Utility Block™ - Single - Swivel Shackle Head

Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase.


  • Lightweight durable construction
  • Economical
  • Maintenance free

  • Vang, cunningham and trapeze retriever systems on dinghies
  • Leech line tackles, bunk adjusters, etc on larger boats

  • U.V. stabilized acetal sheaves
  • Grade 316 Stainless Steel cheeks

Sheave Ø:t25mm(1")
Max. Rope Ø: 6mm(1/4")
Pin Ø: 4mm(5/32")
B. L.:t300kg(660lbs)
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