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Ronstan Series 25 Loop Top Block Block

Cat.No:  5298 Sup. No:  RF571
Series 25 All Purpose Utility Block

Availability: In stock

RRP: $9.90

our price $8.90
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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


  • Sheave Diam: 25 mm
  • Max. Rope Diam: 6 mm
  • Pin Diam: Not suitable
  • Max. Wire Diam: Not suitable
  • Max. Working Load: 300 kg
  • Breaking Load: 600 kg
  • Weight: 15 g


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


  • U.V. stabilised Acetal sheaves
  • Grade 316 stainless steel cheeks

Australia's largest marine accessories retailer. Serving boat owners since 1962. With sixteen big supermarkets and mail order departments Australia wide Whitworths Marine & Leisure offers the best service, convenient locations, a huge selection of quality products, and unbeatable prices.