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The 20 mm Ronstan triple block is designed for high-ratio purchases, such as the vang or cunningham on dinghies and catamarans. Its three sheaves take lines up to 6 mm.
This website uses cookies, which are necessary for the technical operation of the website and are always set. Other cookies, which increase the usability of this website, serve for direct advertising or simplify interaction with other websites and social networks, will only be used with your consent.
