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Ronstan Series 20 Triple Shackle Head Block

Cat.No:  4861 Sup. No:  RF20302

Availability: In stock

RRP: $55.33

our price $49.95
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  • Low friction
  • High static and dynamic load capacity
  • Lightweight


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


  • Sheave Diam.: 20 mm
  • Max. Rope Diam.: 6 mm
  • Max. Wire Diam.: Not Suitable
  • Pin Diam: 4.0mm
  • Max. Working Load: 400 kg
  • Breaking Load: 850 kg
  • Weight: 62 g


  • 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

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.