Ronstan Series 50 All Purpose Block - Single - Universal Head - RF51100

Ronstan Series 50 All Purpose Block - Single - Universal Head - RF51100

Marsoni

M251S

$30.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Ronstan Series 50 All Purpose Block - Single - Universal Head - RF51100Series 50 All Purpose Block Single Universal Head All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock universal head can be fixed in either of

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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These bags are a nice size and seem durable, especially for larger items. However, they arrived with a very strong odor that was noticeable as soon as I opened the package. I'm hoping the smell fades over time, but it was disappointing and worth mentioning. Overall, the bags are functional, but the odor keeps me from giving a higher rating.

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Reviewed in the United States on June 2, 2026