![Ronstan Series 30 Utility Block - Double, Tube Rivet [RF417] Cartography | Garmin BlueChart Vision *This is a date-stamped product](https://cdn.shopify.com/s/files/1/0703/9831/2605/files/72299XL.jpg?v=1740538636)
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*This is a date-stamped product and must be replaced every 2 years from the date of installation or 4 years from the date of manufacture
black and yellow wiring
Master Switch for + or - circuit
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Ronstan Series 30 Utility Block - Double, Tube Rivet [RF417] Cartography | Garmin BlueChart Vision *This is a date-stamped productSeries 30 Utility Block Double, Tube Rivet 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 accept fixing screws, shackles or can be used as a becket for extra purchase. Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters etc on larger yachts
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