![Ronstan Series 30 Utility Block - Single, Swivel Ring Head [RF443]](https://www.yachtseatworks.com/wp-content/uploads/2026/10/ronstan-series-30-utility-block-single-swivel-ring-head-rf443.webp)
Series 30 Utility Block – Single, Swivel Ring Head
Features:
- Lightweight durable construction
- Economical
- Maintenance free
Product Information:
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.
Applications:
- Vang, cunningham and trapeze retriever systems on dinghies
- Leech line tackles, bunk adjusters etc on larger yachts
Materials:
- U.V. stabilized Acetal sheaves
- Grade 316 stainless steel cheeks
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